It'd be trivial (TM) for someone to make a web interface, and the connections would say "Connecting from some-data-center.aws-cloud.bl"...

Libera gives all registered users a cloak to hide their ip.

There are many ways to mask your "real" ip address, VPN being an easy start.

The fact that this is needed at all is a serious problem. Making people who aren't aware of some obscure details accidentally doxx themselves is incredibly user-hostile.

IP addresses aren't linked to a complete street address, and many times don't even show the right town, especially those on CG-NAT or a plain ol' direct public dynamic address. I have seen some IPs, like on AT&T and Comcast home Internet, showing a different state.

So in many cases, you don't need a VPN to prevent revealing your actual geographic location.

And some IPs stick to users for over a decade, and over time the data pieces add up and connect the dots.