The "problem" with Cisternino is the gym warrior persona married with not so hard training. If you're on a hack squat doing a real intense set you don't see or hear anything outside because you are focused on not getting crushed. Someone going all out may need a partner to give a little tap when things are getting dangerous. Hard training is not yelling, cussing, sweating a lot, it's not about putting on a show.
But yeah, lots of irritating people in the gym. Guy could be one of them, depending on your vantage point.

I did feel a little bit sorry for Guy, he was getting crushed on IG by people commenting on his post.