A thought experiment! If we stopped criticising opera singers... what would happen?
I've a cast-iron rule for my internet use. It's this: don't post a negative comment about a living artist (you armchair critic, you).
This is mainly because I don't want the artist happening across my comment. I mean, they probably won't, but -- since everyone has the internet -- they could. And, yes, they just might have more to worry about, professionally or personally, than this rando's opinion... but that's kind of the point too.
So that's my rule, for me. But sometimes a rule which works fine for yourself would be disastrous if followed by everyone. E.g. I rarely dine out. If everyone else did the same, the hospitality industry would collapse overnight.
My question is this: If redditors were to stop posting criticisms of living opera singers (their technique, their choice of roles, their over-the-hillness, etc), what effect would this have? What would change?