They countered Kamui too, did he stop using that?Because they had a counter for it. go read the manga.
Being too op isn't really a valid reason, he's too op with just infinite chakra and Susanoo.Tobi normally lies when he has to. Lying 24/7 to make people think he can do things he can't is something I haven't seen tobi do, plus it was an important situation and the information for yamato was needed. I don't see why tobi would tell kabuto don't worry I got this, if he couldn't really get the information. Unless he knew kabuto would say no we need him for hashirama blah blah, but once again this is all looking unlikely.
For things about rinnegan control, we have to remember nagato grow up with it since he was a little boy till about 40+, where as madara and obito have had it for relatively sort periods of timed compared to nagato. Two reasons for their lack of rinnegan use; one is the things we have discussed about tobi. And two is madara would just be wayyyyyy to OP if he used all the paths as well as everything else he can do. That's basically another nagato
And I guess controlling the Mazou and people through it just comes naturally then? Obito called them HIS NEW Six Path's of Pain, yet they were nothing more than remotely controlled Jinchuuriki.
And how would he know Human Path if he didnt know how to use Tendo? Lots of contradiction here.