New Number Lock Feature to help Prevent SIM Swapping Fraud

I just discovered this: How to turn on or off a Number Lock - Xfinity Support. I believe it is a new feature. Has anyone any experience with it or additional information? For example, can support center staff bypass the lock? It would be good to have additional detail on how reliable this lock truly is. SIM swapping fraud continues to increase.

Apparently, Xfinity introduced this feature in response to new FCC requirements.