I wouldn't be confident that funding is the solution here. This is about adding a feature to a project that seems to be completely disinterested in that feature, some recent answers from project developers in the gitlab issue are even hostile to it. Likely to be not something money can fix, this goes directly into the deep rooted problems GNOME has with usability.
The complaint is legit. But making a page about your pet issue to create emotional response and cause rants about gnome on social media? That's annoying.
Here's a better structure for the post "This is an issue that really impacts me and I care a lot about. See existing bug / discussion links. I can't solve it myself, but it's important enough that I'm willing to put up bounty for that work." I don't think anyone would complain about it.
“There's some hypothetical money to claim from somebody, somewhere” is not a good funding model. At best, you'll get a dozen additional issues sorted in a large project.
But we need some good funding model to pay someone to fix them. Good funding models are something the opensource world has been missing for a while...