Are there any passkey hardware tokens the private key is effectively irretrievable? That is why up to now FIDO U2F has been my preferred additional factor. The down side is that you have to register multiple tokens for each authentication service in case one is lost or damaged. I miss the days of openid when I could use my own idp with any service, but the walls quickly went up when the big players wanted to control the ecosystem.
It's the people who aggressively slide right over just a few feet in front of me (cutting off nearly all of my safety buffer) without so much as a signal that really drive me nuts.