Sometimes just deleting a couple of lines in Vim (IdeaVIM in my case) and knowing that parinfer will take care of the parens feels faster and more comfortable to me than using paredit. YMMV.
And as far as beginners are concerned - for someone coming from an OOP/imperative programming/C-style syntax background, a LISP will seem very foreign and weird for many reasons, the parens being just one of them.
I think having the ability to get your feet wet and start dabbling without an upfront investment is a good thing and the "jumping into the deep end" approach isn't for everyone, especially not for many beginners who at this point have only a very vague idea that a LISP might be for them and are already facing a number of new concepts that they need to get their heads around.
Parinfer requires no investment, Paredit requires some. Not much, but still. And going from one to the other as one feels drawn to explore the language is, I think, a perfectly natural transition, which requires no unlearning or changing of habits whatsoever, and as such it's also a more accessible path to getting into LISP. In my book, that's a good thing.
But here we're beginning to move into a general attitude/philosophy territory that's hard to argue about, so I'd be perfectly comfortable with agreeing to disagree and leaving it at that.