John Gruber in his piece DHH Argues Against Passkeys
Also, I really dislike the practice of replacing passwords with email “magic links”. Autofilling a password from my keychain happens instantly; getting a magic link from email can take minutes sometimes, and even in the fastest case, it’s nowhere near instantaneous. Replacing something very fast — password autofill — with something slower is just a terrible idea. For people who actually prefer email magic links, it’s fine as an option, but it shouldn’t be the default, and it certainly shouldn’t be the only way to sign into an account.