So nothing really nefarious then.
I don't even want them knowing when I'm using my computer.
“What gets measured gets managed.”
All the concerning privacy issues with Facebook or any other company should be seen rigorously by its users. Telemetry at OS Level is one of the worst offending practices IMO.
It's always good to trust but verify, although here the the safeguard is pretty strong.
[1] Very little to not at all.