I would say it still counts as 2fa just shifting what is verifying you to your password manager and using the site password and 2fa as a way to verify the password manager with the site. If setup right they would have to have the database and your password to decrypt it not just one or the other and for password managers that sync the database it should require your password and 2fa to sync to a new device so it can’t just be freely grabbed. If that doesn’t count as 2fa then I would like to see an argument about how okta signing you into sites counts as 2fa as it is basically the same thing.