This might solve the original author's issues, AND might also attract other people to do the job. The more people, the more eyes. It's definitely not a silver bullet, but I would be surprised that OSS maintainers are fine with the current financial arrangement, or lack of it.

Money itself doesn't necessarily cure mental health issues. I'm mean it usually doesn't hurt, but it's not like you can blend cash up into a smoothy and cure depression. (Yes, that's a South Park reference.)

Lack of money on the other hand can both cause mental issues and make dealing with them harder if not impossible.