I'd love to set one up, but I don't think it's enough... That's not the whole story. I bet the actual fundraising is a full time job unto itself.

I joined the GitHub Sponsors thing and somwhow got a few sponsors, but it wasn't even close to "quit $DAYJOB and focus on free software" territory. Achieving success here would be a dream come true but even the biggest open source projects aren't making anywhere close to a good individual salary. As the biggest free software project ever, Linux is always the exception.