You definitely gain a deeper understanding of software if you follow through. Of course, if you only do the learnyouahaskell.com tutorial there will not be much

You definitely gain a deeper understanding of software if you follow through. Of course, if you only do the learnyouahaskell.com tutorial there will not be much in there that couldn't be done in other languages. The real insights are not in the language itself (except for laziness and some other cool bits like levity polymorphism) but in the ecosystem of libraries and blogs. As for the type system preventing you from bugs, I agree that it doesn't really live up to the promise.