No, they mean 'settings', 'biometrics and security', and 'secure startup' this setting makes it so anytime your phone is rebooted you have to enter a pin before your phone will fully reboot again.
It is an added security feature. If it has truly been removed from the 10 series phones that would be a very big mistake by Samsung.
Device data encryption is enabled by default. This started some Android versions ago.
Secure startup is required to use my work email on my phone so I noticed when I didn't have to enable it on the S10+ and then again on the Note 10+.