They just said they don't like the direction Animopron is heading.
Which, seeing how StudioFOW's Subverse turned out, is a more than valid concern.
Animo's supporters, support Animo, so he is free to do whatever he pleases, but some fans are also free to not like it.
My opinion on the game, to keep this on-topic:
Animo has been full time on the game since May 5th and is already teasing a trailer. So an early release in 7 months is actually really good and will allow the fans to see whether they like what they are doing or not, he also seems to be working with more people for this project, which he didn't do for his videos, so releases might be faster, and we might get more content overall.
So I would love to see what they come up with, even though I really hope he doesn't drop his usual stuff as he is pretty much the only one that really nails the art of anatomically impossible horse fucking.