I agree. However, a certain rundancy in IT has always helped me: e.g. if a key needs resetting, it is good to have another working one to peep.
It is a shame, I am not able to register the two new Google Titan hardware keys (Xmas present) for FIDO2-2FA with Bitwarden. If only that upper limit of maximum 5 keys was released to e.g. 10, it would not always be on our minds.