Perfect is a bit of a stretch. There was a tiny chance of Niemann winning that match, but smarter folk than I have analyzed the game and said that it was consistent with legitimate play
Reddit meme? You mean the explicit statement/accusation by Magnus Carlson himself on Twitter, and the youtube video I linked that shows exactly how its possible with little effort?
The good people of the internet can't do all the reading and video watching for you - Most of have lives, but can still be bothered to look into whether we should open our mouths with some dismissive bullshit. What's your excuse?
You're misunderstanding/misrepresenting the historical/societal role of shame. Its not just a personal feeling to be felt, or more likely feigned, nor is it something one person is capable of imparting to another who is not already inclined towards it.
One's elders do not wait for friends and family to leave the room before calling out shamefull acts, nor would doing so serve any purpose.