I don't even know. I'm assuming there's a handful of people giving them a drip feed of pity bucks through something like Patreon. Threatening suicide if they don't get X amount of dollars each month is a detestable thing to so much as attempt and doesn't work on anybody with half a brain, but it's just enough to make a useful idiot and their money part ways. Especially if they feel like it's their moral duty to prevent losing such a valuable and contributing member of society. I don't know how you could live like that, as a person.
I'm genuinely uncomfortable imagining sitting around playing the same game or writing the same droning posts online without variation 24/7. A person's gotta have goals. Even people who are overwhelmingly plain and unnotable have some sort of short-term goal like saving up for something they want, meeting somebody new, or gaining some sort of skill or benefit. Cosmo has nothing. Anything they've done so far is spur-of-the-moment, like hijacking an entire website to promote themselves or making up a category to speedrun which only they would apply to, or benign and monotonous with no feasible purpose, like...I don't know, writing some vapid slam poetry or something?
My point is, a goal is something you set for yourself. Most people aren't aware unless they consider it, but they have something they're working towards. Cosmo doesn't. What have they even accomplished to their benefit in the last couple of years? And just as having a goal is something you must set for yourself, living an aimless life is something you to do yourself. It's stating the obvious, but everything--literally everything--Cosmo has done to lead to their suffering has been self-imposed.
I'd suggest writing an autobiography, personally.