I'm not offended and it's a reasonable question. I've coached young people for many years. I've been a gym rat for much of my life. I've been around kids of all ages for many years. Up until a couple years ago, I was playing sports regularly with people ranging in age from HS to mid-70s. So I'm relating what I see from all those experiences up until 2 years ago. Reasonably recent.
We agree that the current generation is, in general, much more tolerant than ever of alternative lifestyles. But not everybody in the current generation is equally tolerant. And I've found that male athletes are one of the groups of people I'm around regularly, even at younger ages, that still hold strongly anti-gay attitudes. Female athletes are vastly more accepting and have been for much longer.
But really, this is all beside the point. The point is not how you or I are experiencing all this.
The point is how this kid was experiencing it. Walk a mile in his shoes.
It's not really our place to judge other people for how comfortable, or not, they are about this sort of thing, is it?