Why do the kiddie winkies think you're criticizing them when you're actually trying to be helpful and give advice?

Some girl posted a video of herself playing the bass line for "The Mayor Of Simpleton" by XTC, not an easy bass line to learn. As far as I could tell, she did a great job except for one bar in each stanza where, as far as I can tell, she played a higher octave than she should've. I complimented her on learning it well except for that one bar, about 4 notes, and she and two others jumped all over my ass calling me a creepy old man that doesn't know shit about music (music has BEEN my life, ALL my life!!) and calling me all sorts of names and throwing insults at me!!
And, this was far from the first time this has happened to me!! Rather than take the compliment AND the advice/suggestion, I get chewed out for trying to help!!

Why do the kiddie winkies think you're criticizing them when you're actually trying to be helpful and give advice?
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