[ta1771]

Check out Bromite, they have an F-Droid repo that you can add to F-Droid!

Not affiliated with Bromite, just cycling accounts, can point toward my last one if anyone's concerned about this acct's greenness.

[donio]

You got my hopes up but Bromite doesn't support extensions according to their FAQ https://github.com/bromite/bromite/blob/master/FAQ.md

[ta1771]

My chosen threat model does not allow for significantly less security in exchange for extensions.

Also, they may very well take PRs for extension support (haven't looked through their Issues/roadmap), but, I'm sure it's not on the top of a security-first project's to-do list.