My guess is that the majority of Haskell programmers who are comfortable enough with the forall keyword to use it in practice would find the symbol ∀ to be more

My guess is that the majority of Haskell programmers who are comfortable enough with the forall keyword to use it in practice would find the symbol ∀ to be more readable than the keyword, rather than less. (This is not snark, it's my actual belief.)