Unless I can write and distribute extensions without signing a legal agreement or having to involve a thirdparty gatekeeper, I'd rather not.
Chrome allows permanent side loading for users in dev mode. Firefox requires at least uploading to Mozilla for signing and some sanity checks, then you can side load or self host them.
... which requires I sign a legal document and involve a thirdparty gatekeeper. Chrome is practically the same; I'm not going to ask my users to go mess with their browsers' settings assuming they can even do so (policies).
Life is too short to deal with the nonsense of hostile platforms.