Um... If I may ask, what is the tweet in question?
A large portion of the show's creative staff got laid off, primarily the director Tatsuki. Anyone who survived has resigned out of protest at this point.
There is a lot of talk about shady practices and artist oppression since the decision was so sudden, and that the producer, Kadokawa, is blaming the animation studio for mishandling their property and using Kemono Friends without their permission.