Agreed; I was going to comment something similar: I work with SAP (SAP's HANA database runs on SUSE). When I need a free swrver OS for anything else, I go debian (I used RH from 4.2 to 8.0 when they fooled us once, then went debian).
So being comfortable with a rpm based and a deb based system is good advice.
On the server side, when most administration is through ssh, distro differences are not as relevant as for GUI environments. Package handling is the most impacting difference (and I prefer deb), not that it's a showstopper, when you have yast and aptitude though.
I've never heard of it, but my thought when I read it was that it sounds like a bad respiratory tract condition. "The MRI revealed Jack had a 5cm Pleroma in his left lung. Stage 4. It was too late for Jack."