Does anyone know whether the current password feature will remain available? Wouldn’t Passkey - by using TouchID - allow a malicious person to force a log-in by placing a sleeping or unconscious person’s finger on the screen, for example? Or a mugger physically forcing a victims hand onto the screen? Current law typically prevents someone from divulging a password without a court-order. Not so with physically forcing someone to touch a screen. Unless password use is still allowed, this seems like a major step towards increased insecurity.
Yes, passwords are still available and will remain available, and you can always choose to use passwords and not use Passkeys, it's up to you.
Many people use password autofill on their devices. So whether it's password via autofill, or passkey, it's still the same idea, you get it when you have access to the device.
If you just remember your passwords, chances are your password security is actually pretty bad. You should read up on how to make sure your passwords are strong, but generally if you: reuse passwords, use a low-complexity password, use a variation of an old password, etc, all that and more are bad for security.
However, a Passkey can't be any better or worse than any other Passkey. So there are never weak Passkeys like there are passwords, they are always strong.
That's the essential difference for security, you no longer have people using "password1234" as their password, which is abysmal for security.
As for the court orders, remember that your online accounts are still subpoena-able by court order as well. If you use major services: email, social media, etc, they will have your data in clear text and a court can subpoena the provider and get everything regardless of what you do. So stop freaking out about passwords vs Passkey because that doesn't matter when they just go to the online providers of the world and get your data straight from them.
And for things on your phone, simple little trick for you: press the power button 5 times and it locks out biometrics. You can't be compelled to enter your device passcode. So that's all you need to do, power button 5 times, do it in your pocket.