Manga is still the same,just the people who changed and started to think it's their manga.
Most people just have a horrible understanding of their own mind, and don't have a clue how to express what it is thinking.
It's sad, really.
Look at yourself for example. You wouldn't be mad if madara had killed obito,but you are because he got trolled by obito. There were no asspulls,misguided antagonist having a change of heart is happening from the 1st arc of naruto *cough*ZABUZA*cough*. It's one of the many reason why I love NARUTO. Madara too will be having a change of heart. Obito didn't just changed in like 1 chapter,his subconscious past self started to overpower his conscious present self the moment he started facing naruto.
People are upset not because of the sudden changes of character. Those are a little frustrating, but it all stems from the fact that Kishimoto has a horrible time telling a good story.
Why? Because the suspension of disbelief (or suspension of reality) is so horribly out of whack that it's not even funny. Part 2 opened with a race against time. We had to watch the team as they raced across Fire and Wind country to try and save Gaara. Then we see Naruto and Bee make it from Turtle Island to the battlefield roughly the same distance away in a matter of hours. This would be a notable feat, except that everyone else is phasing in and out of existence with time and space being almost infinitely malleable.
Then we see instances of: "Naruto, here is a limitation on your now bullshit abilities."
"Okay, I'm going to encounter that limitation once, then completely ignore it for the rest of the series because friendship."
Which completely undermines the message of the War arc - which is that the unification of people has power greater than any individual. Rather than having Naruto and crew step up to the plate to surpass the previous generation... we revive the Hokage and then send them in to get completely owned by a single character.
At this point - Naruto's victory is completely arbitrary because of the title "Naruto." There is absolutely no suspension of disbelief - Madara isn't a real character that people can really appreciate because he is so mystically powerful. Limits on character endurance and the dynamic interaction of strategies played a huge part in the beginning. Crafty abilities or ploys could surpass brute strength, characters had limits that they took days or weeks to recover from, surgical procedures of enhancement/repair took time to heal and for the user to learn to wield them properly.
Enemies had the ability to be mistaken in the nature and use of techniques, all characters had to balance the weaknesses of their own techniques - the scope of battle and story was far more dynamic. You actually could get a 'feel' for the world of Teenage Mutant Wizard Ninjas.
The war arc just feels too much like Namek.
[video=youtube;SyT25fKbe7U]http://www.youtube.com/watch?v=SyT25fKbe7U[/video]
I mean...
How ****ing dead-on is that?
Madara: "Who here is tired of my third form?"
Everyone: "Me."
Tsunade: "I was more a fan of the first."
Minato: "I'd settle on second, really."
Madara: "Final form it is!" *absorbs juubi*
A lot of deep psychological aspect is being involved from the begining of shippuden,which got peaked in obito vs naruto fight. I don't think that kids of age group 16 or below can understand it,so you could say that exceeding the level of mind of targetted age group is KISHI'S one and only fault.
Honestly, the philosophical aspect of Naruto is relatively straight-forward and somewhat narrow.
With one possible exception. Naruto went from being the one who defied destiny (remember the whole Neji battle?) to being the Child of Prophecy.
The Taoist themes in the series are very deep running - the idea that one both has freedom and a destiny is somewhat complicated, as is the idea that everything is connected.
I actually expect Kaguya to be tied into the Hyuuga in some way. The power bestowed upon her was not Ninjutsu - I suspect it was the 'original' Byakugan - the ability to truly be a Taoist master, able to 'jyuuken' the nodes and threads of nature chakra.
But that's another story.
Realistically speaking - Kishimoto is just not all that great at telling a story in a believable manner. He's given in to the "Dragon Ball Z trap" that utilizes increasingly powerful enemies as a cheap means of attempting to build suspense.
Actually - the Namek arc was pretty damned great up until the final show-down with Freiza. That nonsense drug on for too long and was just a never ending sequence of power-ups with barely passing grounds or explanation.
Which is what we are seeing in the current war arc.
Minato shows up with the Kyuubi Cloak.
Was he training inside the RDS? Or what? Why would he -not- use that to save his wife and child? Naruto had to go through all kinds of hooplah that was 'ground-breaking' for both his character and that of the Kyuubi. And Minato just shows up, no explanation, using the perfect Kyuubi Cloak.
Okay, whatever.
Then he uses a perfected Sage mode - Naruto's other major triumph. Again... where the **** was that when he was Hokage? Or did he just so happen to pick that up while dead, too? Are the rest of the dead Kage just slackers? Surely they could have been working on their mojo.
And then he gets on-shot into irrelevance.
"I'm going to have Minato take a dump on the whole notion that the next generation surpasses the previous... to no plot effect. Minato gets perfect sage mode for no damned reason, didn't use it to protect the village, and apparently didn't use the Kyuubi Cloak, either. But it made Madara look more bad-ass, right!?"
Kishimoto just needs to stop rolling in the steaming piles the good idea fairy leaves on his pillow at night.