I have YouTube premium, so that part of my money is distributed to those creators. I also have subscriptions for news sites, podcasts and comics through Patreon and other services.
And to be clear: I don’t have a single problem with advertising — I have a huge problem with tracking me wherever I go online. When I’m on a site for Japanese language learning, show me ads for flights to Japan but stop tracking every website I visit.
I am paying for the services I use.
Well, we‘ll never know as Mozilla has never tried to create user financed software since Netscape Navigatior Gold, IIRC.