Because people on the internal network are behind the same ip address(es)... This makes perfect sense to mention that while showcasing work. I'm not sure what are you insinuating.

Do you have any actual evidence of this, or is it a baseless accusation?

I didn't make it up, if that's what you're asking. Any Meta employee can confirm: fb.workplace.com/groups/scm.fyi/posts/2705323112933543

It's an internal post. Can confirm.

Good example of the "naughtiness" pg so prizes.