I think you're dismissing the important curation work of F-Droid.
Sure it's imperfect and security patches take too long, an additional intermediary etc.
But using Obtainium or Accrescent just leaves the users to their own devices installing any app, with zero oversight.
Far from ideal.
You seem to be suggesting bad will from FDroid management, it would be better if you were more explicit on why you think that way, instead of just insinuating.