If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one.
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.
He explained why, didn't he? IANEY, but I suspect that there is no appeal. I assume that the comments people made are visible from their profile, but maybe not. Maybe there is an archived version somewhere online, if you are lucky. Don't hold your breath, though.
Did you read the quote? He specifically said he was not deleting it, and did not delete it at that time. And he said it wouldn't be deleted. He only deleted some links to it, but said the direct link would continue to work.
Around 50 more comments were added to the discussion after he posted that.
It was deleted some time later. I don't know when. Archive.org doesn't have it.
Does it bother anyone here that (apparently) unpopular ideas are deleted with no reason given, no notice, and no accountability?