Highly abstract and general typeclasses for standard mathematical and algebraic concepts are extremely useful and not eschewed. With them you can do genuinely generic programming in a syntactically convenient way. Examples include: Functor, Applicative, Monad, Num, Floating, Integral, MonadState, MonadReader, Profunctor, Contravariant, ...
Typeclasses which are ad hoc, specific, and typically defined on a per project basis, are much more debatable. If you have the concept of "rendering to the screen" and you have typeclass Renderable with a render method then this is really no better than just writing separate functions for each instance of the Renderable. This isn't genuinely generic programming, it's just symbol overloading.
