The thing is, those poor design decisions have nothing to do with those features, i claim that every feature could be implemented without “holding the compose files hostage”.

Yes, this is exactly my point. I think I’ve laid out very clearly how Portainer’s shortcomings are far more than just “It’s not for your use case.”

Portainer is designed, from the ground up to trap you in an ecosystem. The choices they made aren’t because it’s necessary to do those things that way in order to be a usable Docker GUI. It’s solely because they do not want you to be able to easily move away from their platform once you’re on it.