I think all of their deaths fit in an ironic sort of way they died the way they lived
Konan died by the hand of quite possibly the only person who could have dodged her H-bomb tech.....
Hidan an immortal by nin standards will die a pile of torn burnt flesh....
Kakazu a man you'd have to kill five times to beat was killed by one tech that could do that just that....
Diedara lived with died with a bang trying to kill the brother of the man he hated the most..
Kisame a ninja trying to be the best one he could be killed by a man who couldn't remember him in his life but will never forget him in his death....
Sasori was killed by the very first 2 puppets he ever made.....
Itachi died hoping his brother thought he'd killed a traitor but instead killed a hero....
Nagato died without pain or regret giving relief to the world......
+rep for the summaries, but I still disagree with some the ways the Akatsuki died.
Sasori could have beaten those puppets, but "he let them" land a hit on him.
Deidara has an epic battle that goes out with a bang, but Sasuke survived...
But Kakuzu is still the worst IMO. He loses two hearts which was apparently "unprecedented." And then he find himself in a 5v1 situation, now you would think he would fight with his two elemental creatures seperated to make it technically 5v3. But of course he combines them to make himself that much more powerful. Then instead of going down in an epic 5v1 battle, Naruto fights him 1v1 and beats him in
two moves. This guy fought the First Hokage and lived, killed countless amounts of powerful shinobi for their hearts, and lives 91 years which is unheard of in Naruto (not taking Tobi or Madara into consideration). And then a pre sm/km Naruto kills him with a Rasenshuriken. If he had been seperated, Naruto could not have beat him
alone, but of course Kishi couldn't allow this to happen because he needed Naruto to use his new tech