Proton passkeys are stored in a password manager, which he specifically calls out.

If you have a password managed and know how to use it, you’re already a lot less susceptible to the problem that passkeys are trying to solve.

Personally, I think passkeys are great for tech-savvy users, but I wouldn’t dream of recommending them to non tech-savvy people. Password managers are still used by the minority, that needs to be fixed before passkeys are useful.

You’ll find that under settings -> customise -> swipe address bar sideways to switch tabs

Powershell evolved well beyond AD and LDAP a long time ago. Objects on the pipeline are a game changer.