Certainly this is possible, but only if you are a member of both communities. Due to the confusing UX you mention, the threat model of "accidentally accept a Al

Certainly this is possible, but only if you are a member of both communities. Due to the confusing UX you mention, the threat model of "accidentally accept a Alabama or Saudi government job's Discord invite, or the Discord invite for your now-potentially-required-to-out-you-by-law-thanks-Alabama cousin's D&D group, in the desktop app while logged into an alt account with a LGBT or trans flag profile picture, or nonbinary pronouns in your username" is significantly more likely and probabilistically dangerous than "Alabama or Saudi state actors are lurking LGBT communities and extracting user IDs at scale to correlate with Discord users on other accounts." And yeah, that last one's problematic too, but Discord can still start somewhere. I'd argue that Discord has a moral obligation to start somewhere.