You can still watch the movies, because they're pretty much rebooting the anime franchise and Kunikiho Yuyama has no involvement in them. But here's the quick low down if you don't know what I mean - Satoshi Tajiri said that the anime canonically ends after XY&Z, correct? So guess what Kunikiho Yuyama did.
Also, another thing he did that was messed up - Rica Matsumoto, Ash's Japanese voice actress - has a mandate on Ash that prevents him from hooking up with anybody, kind of like what Sonic the Hedgehog has, if you will. So guess what Kunikiho Yuyama did to THAT.