You can get rid of the element of hope by using KeepassXC and syncthing. Bonus is you can use this FOSS stack completely offline.
Vaultwarden is the way. Easy to host docker. Solid. And if bitwarden blocks the clients there will be a fork.
It's leading to it anyway.
Not only is it incurring the cost of project fragmentation, but also incurring an always online cost with overly-complicated docker solutions, when a fully offline and airgapped solution already exists.
Furthermore, staying with the same ecosystem invokes the sunken cost fallacy. But the migration from Bitwarden couldn't be simpler (just export Bitwarden json file). It's almost a form of battered woman syndrome people are inflicting on themselves when quite simply they can hop onto an already proven ecosystem that doesn't bait and switch.
Afaik vaultwarden and bitwarden clients are as proven as keepass.