I really like onlykey for hardware 2fa. My only complaint about it is that some orgs are yubikey only.

Yubikey only as a workplace or for general public users?

I've seen public facing things that offered hardware 2fa but blocked non yubikey devices. I do have yubikeys for those cases but prefer to use the onlykey because of the password manager function as well.

That's so dumb.

Agreed. Just implement FIDO and leave me to use it however I want.