I would actually like the idea of community funding.
"Obviously the GrapheneOS core developers aren't bounty hunters"
This is one way of looking at this. Flawed idea imo.
Think of it like a Kickstarter. Donate 1 million and we will implement XYZ.
Why can't it be the same? With a few sane adjustments of course.
But for example, you want feature X, there is 10k amount for it, once it reaches
this goal, it's implemented. Yeah, it makes the project trashy and pay-for-feature,
like many games where you have to pay to win, but well, at least it's a thing to consider.
I know this bare idea is bad, but it's possible to make goals that once reached, development
time will be focused towards it. Better camera, backup, etc.