There is a closed thread here: ✅ Add setting to disable Bitwarden passkey prompt
The last comment mentions that something has been fixed. I have no idea what has been fixed, but there is still no option to disable passkeys in Bitwarden.
I am not interested in using the Bitwarden passkeys. I have a Fido2 key that works well with the Windows prompt. In Firefox I need to switch to 2FA where possible, otherwise I have to disable the Bitwarden plugin to log in.
That’s unacceptable.