I am fine with compiler pointing out broken code. I am not fine with people saying "The code with side effects must be segregated from the pure code, with the typechecker in place to maintain this separation, and we must also keep CONSTANT VIGIL against introducing any more effectful code than strictly necessary — but of course we don't think that side effects are bad, haha. Why, some of my best friends are side effects, I am not a functional purist" or something like that.
Hell, you can write imperative spaghetti in Haskell if you want. I've done it. People will just keep suggesting you fix it, because it's so much more obvious how bad it is when you can so quickly and easily use the type system to guide the process of fixing it.
