Not exactly a new problem
In reality, reverse DNS tells you something but often not a great deal. Firms generally don't bother with their reverse DNS entries, so if your A record for www.mycompany.com resolves to A.B.C.D, you'll seldom find a PTR entry that tells the world that A.B.C.D reverse-maps to www.mycompany.com.
The university reference made me smile. In the 1990s one establishment (with its own /16 public IP range) assigned static public addresses to students in residences, and religiously added PTR records to reverse-map them to building, room and floor. Until a third-year IT student pointed out that this was a handy way for pervs to track down vulnerable people in their residence rooms. Them were the days before NAT firewalls and extensive use of private addressing.