The attempt to get rid of passwords has been the biggest assault on the free internet in recent history, and people are asleep at the wheel as it's happening.
They want to tie you to an external service, so they can tie you to your phone, which they also manage with another external service.
All of these schemes are braindead with obtuse, user-unfriendly backup/transfer/restore options. They fail at even making things "simple" for regular users.
Arguing effectively that passwords were fine for computing in 1970 isn't an answer. So if you don't like passkeys it's reasonable to ask for your alternative.
My mom can’t tell if a website is fake if it’s made to look exactly like Facebook, for example. So in a sense passwords are actually awful for users because they’re required to remember dozens of passwords and verify that a website is legit. If they just reuse the same password everywhere then they are vulnerable to another kind of attack because some website somewhere will mishandle it, forcing her to change every password on every site afterward.
Instead, she can have the best of both worlds by remembering one master password, that basically opens a magic app that will check that the website is legit and create/retrieve a unique passkey for each login.
Or use a password manager to solve both of these issues
Except you're not tied to a magic phone
For example: https://github.com/StrongKey/fido2