I think your pushback is reasonable, but I want to speak up in defense of delis-thumbs-7e's comment, which I don't read as dismissive in a negative way.
In fact, I'd like to suggest that he's championing free range childhood by not making decisions for young people who might very realistically resent it as adults.
I know three people with perfect pitch. One of them thinks it's great (and is kind of annoying about it). The other two are constantly telling people that perfect pitch just means you're always exercising patience when your friends are singing, counting down the moments until they stop.
That sounds like a version of hell to me.
I agree with you about the bits I know anything about, and the rest sounds likely.
It just makes a significant difference when the context is a Show HN and the critical comment is at the top. If it is comment (say) #13 in a varied conversation, that comes across differently. This is more the fault of upvotes, as I mentioned, but it's hard to address those directly.