Sounds like he doesn't play Engineered Explosives.

Back in the day I used to play T2 at a local shop. My brother and our friends were all around 14-16 and we would often beat the adults or the 20-something dudes. There were about 3 or 4 of them that HATED losing to any of us. One guy had a crazy temper and has thrown his entire deck across the room before (not in a deck box mind you, sleeves flying everywhere) and two others would just be absolute pricks to us little kids, talking all kinds of shit and picking our cards up off the table and throwing them on the floor. It was awful playing against them and we didn't know enough to call the judge/owner over. Eventually those two were banned from the store. Despite all the trauma, it was so so satisfying any time any of us beat them.

Nowadays I play one or two events weekly and both events are full of people pleasant to play against. So it doesn't seem like it's too common, although if you asked me 8 years ago I would probably have a different opinion.