For example, nearly every visit to my Amazon orders page I am now greeted with a nearly full screen modal browser popup letting me know about passkeys and why I should switch to them RIGHT NOW. I politely declined - the first thousand times. I don't know if this is a site or browser issue and frankly I don't care anymore. It's spam at this point and I want nothing to do with it.
My hesitancy was rooted in concerns about potential issues pretty much what you just described so glad to know I was right.
Seems like passkeys use a very simple model where you are using a single device with a single browser or are somehow syncing across devices with some cloud service - and from your description it sounds like that doesn't even work.
No thanks - I'll stick with passwords. Did everyone forget about hardware tokens which are device and OS-independent and rely on no external infrastructre?