I'll bite, though I am only half convinced this is a question in good faith.
Ages ago, I remember putting up a video of me playing a Cole Porter song, and one of the very longstanding and knowledgable forum members (Uncle Rufus) gave me some feedback. In frank but constructive language, he made it clear that I was not nailing the nuances of the written melody in my vocals, and that I should go back to the sheet music to really understand what made the melody work over the chord changes. This was something that was important for me to hear at the time, and it stuck with me in my playing ever since. I think I'm a better musician for it.
Community doesn't just come in the form of good vibes and positivity, sometimes criticism and challenging people can be just as important, and UC embodied that.