I don't know if that's as much as you think it is. Vi's actually pretty forward with what some of those costs are on her Patreon page there, and in calling the goal of $10,000 "sustainability". If I were to throw some very rough numbers, I'd guess at 10% of that going to payment processing (iirc, Patreon takes 5%, paypal/stripe would be at 3-5%?), which would leave 81,000/yr. 24,000 to tax, and we're down to 4,750/mo.

Internet, piano loan, and rent are 2,650 as per Vi's Patreon pledge amounts. So, 2,100/mo for the rest of life's costs (and if you're not used to seeing the cost, remember that health insurance is not cheap in the US), as well as the costs of material and equipment for her work. I'll point out that "sustainability" as her Patreon goal still involves counting on Amazon wishlist gifts to provide the equipment she wants/needs, and this is before we talk about savings or other such adult things.

It's great that she's getting Patreon income (and probably Youtube ad income)! I really would love to see amazing creators supported in such a way more often. We should just be careful when reading the Patreon top line number that we don't compare it to our bottom line on a pay stub.