Certified stuff makes it easy for procurement groups to defend "IT's" purchase choices and easy to distribute across an enterprise when you know it'll mostly work out of the box.
So marketing, but like any product cert, it's a cya for the buyer with the hope of simpler user experience for a distributed workforce. And, of course, an excuse to charge more.
To make matters worse, this means that the camera defaults to the microphone being disabled, and you need to download their proprietary software to enable it. Which is Windows-only. I've got a mac. So I ended up having to install Windows in a VM just to let me enable the microphone on my webcam. (Fortunately the setting is persistent and you only need the VM once)
I think the auto light settings on the camera need the Windows software too, it's a remarkably bad camera. Avoid!
Ew! That also means the light is software controlled rather than inherently tied to the camera being powered on. You want those on the same circuit so it's physically impossible for some malicious software to turn on the camera without the light!