"Easy as fuck..." wrong! It is very difficult to de-anonymise someone on the Tor network unless they leak identifying information. VPN's and proxies are not necessarily anonymous, but for the ones that are it is tough to get the forwarded ip; but easier than Tor. And CCN's play little to no role in anonymity.
There are GeoIP lists that allow you to lookup an IP address' physical location. These lists can be extremely accurate because they can be correlated by GPS in cell phones. LE still needs to go through the ISP to get the data that says IP address x was assigned to user y at this time.
I doubt
@pumpingiron22 works for an ISP (or at least there is no reason to think he does just because he obtained the IP info.) There are a lot of simple ways to obtain IP information, if he doesn't have access to it via meso.
I'm guessing he compared the IP address to Tor's exit node list to verify it wasn't a Tor associated IP, since Tor is the easiest anonymity software to use, and very popular.