This wasn't mentioned in the previous article I quoted from, but this is something new I've definitely noticed and appreciate. Before, if someone had already unlocked your device, they'd have the access to your passwords because there was no added layer of security before it autofills passwords. Now, you'd have to authenticate with biometrics first (either Touch ID/Face ID) before iOS fills in the password.
And finally, you can control your flashlight via Siri!
It looks like a case where human engineering fooled the so-called security programs (and not helped by Apple's usually not so helpful documentation). All the more reasons that for the Mac, trusting the built in security is the way to go for the most part. You've already paid a premium for the hardware.