well, actually, yes, they've shown quite a bit of distaste for the following: BDSP, Pokemon MD: Adventure Team and believe it or not, Pokemon XY.
Reasons: BDSP, due to how glitched and rushed the game was, as well as being made by another company, Pokemon MD: Adventure Team, because they looked back and decided they didn't really like the art style they went with, as well as didn't like the story, and Pokemon XY because, yes, while the mega evolution concept was cool and all, it had many flaws that offset the appeal in game freaks' opinion, there was also many times where game freak talked about wanting to stop the development of XY because they felt it wasn't a good idea with the story they had.
alright, there you go, if you don't believe me, you can even google this yourself, if I AM wrong, please let me know, I understand that not ALL information given is perfect, and some of the time needs to be pointed out and tweaked to give accurate information.