At least Reddit is structured to be public and searchable (or at least it used to be).

Discord is annoying for a bazillion reasons, but a big one is it's ostensibly a 'close friends gamer chat' platform, yet its taken the role of project support chat, niche topic forums, 'influencer' chat rooms, and things that should absolutely be public facing.

...Another, I guess, is political discourse.

In other words, Discord the company is having their cake and eating it; pretending they're an innocent 'between friends' private chat platform while absolutely structuring it to encourage scams, mega communities with notification spam, patreon-like benefit tiers, and weird stuff that absolutely seeds recruitment for, and engagement on, extremist channels.