Atleast not in my experience with Martin.
Few years ago there was a guy on HLTV with his private cs:go server and teamspeak and he was doing public matches for HLTV everyday.
Almost every single Admin from HLTV played with us for hours and we had so much fun.
In my experience Martin and some other guy with Danish flag (I really dont remember his name and im not sure if he's an admin anymore) were the nicest people. And again, we played almost everyday and really alot of hours.
The other admin with Danish flag - his name were starting with D if I remember correctly. And I think it was something with Devil, but I'm really not sure.
Edit, we also played something exactly the same but it was CS 1.6. Not sure if Martin was playing with us but other Admins did and it was fun and nobody was beeing an asshole. It was like 8 years ago or smth