If you can confirm that the comment is authentic I'd be interested what kind of tor related data you are logging at your exit relays and
why.
It's most likely netflow logs. Quite popular in Uni / regional ISP environments. People collect them for network stats, and to track down "security incidents".
Yep. I worked as a network engineer for a large public university in the US. They logged everything they could. There was at least 30 days of netflow, plus packet inspection of certain flows.
There was little to no policy regarding access to the logs by staff. Law enforcement requests went through the university's legal counsel.
I would expect most US universities to be logging netflow in the very least. Even if the Tor operator isn't keeping logs, it seems safe to assume the network operator is.