We had originally planned to go all-in on passkeys for ONCE/Campfire, and we built the early authentication system entirely around that. It was not a simple setup! Handling passkeys properly is surprisingly complicated on the backend, but we got it done. Unfortunately, the user experience kinda sucked, so we ended up ripping it all out...
It feels like the goal is to get you married to one platform, and the big players are happy for that to be them. As someone who’s used Keepass for over a decade, the whole thing seems less flexible than my janky open source setup, and certainly worse than a paid/for profit solution like bitwarden.