Provocative choice, explicitly excluding Facebook/Meta filters.
My ambition is to build a dependable service that will be up for several years to come. For that to happen, I need to limit myself to a scope I am comfortable maintaining in the long run, instead of burning out under scope creep.
Until the maintainer team grows, I would be on the hook for updates and fixes, and I refuse to create an account on any of that company's sites.
That makes sense. Would you be opposed to having filters for the company's sites given someone else willing to maintain it?
For Meta's properties, I would wait for the maintainer to have a track record of contributions before being comfortable opening that door.