I don't want to shut down valid comparisons and discussion, but will just ask everyone explaining why they prefer these forums or don't like reddit/discord to be wary not to go too far and slip into being insulting about the communities there, who might also be here or at least watching.
As always when criticising something, perhaps in front of the very faces of people who are part of it, it's not so much about what you say as about how you say it and trying to make it as little about people or their intentions and as much about content or tools as possible.
(I'm not saying we've already been too rude about the reddit community here, but I think we might be teetering on the edge of it and would rather forestall tipping over if I can!)
"You may call it 'nonsense' if you like, but I've heard nonsense, compared with which that would be as sensible as a dictionary!"