where's the respect?

Do people realize how disrespectful they are or has society just become so ignorant? Where would you fall within this story? Here's the situation:

I was at a park in Fitchburg yesterday for a walk-a-thon. Polly and I weren't participating in the walk (though we did throw a couple miles in for good measure) so we decided to go check out a street hockey game that was going on at the outdoor rink at the park while enjoying a hot dog. I wanted to jump in and play so badly but the parents of those particular 10-12 year olds may not have appreciated that. Anyway, we were enjoying one game (at least I know I was) when a game at the other outdoor rink got under way. This is when the annoyance began.

Some guy (maybe a dad...in his early 30's?) was standing at the end of the rink looking through the fence which put him only 20 yards or so away from us. He was smoking (smoking around kids bothers me...we know the health risks now right?) and yelling like crazy. He kept yelling commands like "c'mon, push it" and "shoot, shoot, shoot!" I'm sure many people wanted to shoot him. I mean other parents sent occasional pieces of advice out their kids way, but this guy was constant. I felt like he was ruining the experience for the kids and the fans.

Where he was standing was right next to the snack shack (very reasonably priced). I was getting a snack. The guy in line in front of me may have been about my dad's age...probably a grandfather of one of the kids...but not really old. As he was walking back to view the other game (the one the guy was yelling at) he stopped and said something to the guy. Crazy dad responded. Granddad then said, "You know there's no coaching." Crazy dad was like, "Just not over there. Thanks for your concern though." "Thanks for being inconsiderate toward the kids," Granddad countered. As he was walking back to his spot, Crazy dad yelled, "You know what, why don't you just mind your business!" Oooooh, tough guy.

Crazy dad came to get a snack and smelled of alcohol. Then he was talking to the goalie (his son?) about how they need to win the championship...blah, blah, blah.

Now, let's look at this disrespect on a couple of fronts. First, where's the respect for the kids playing trying to have fun and the fans trying to enjoy watching the kids play? It's so incredibly selfish and disrespectful. He ruined people's experience. But more to the point I would like to look at his interaction with Granddad. I've always been taught to respect my elders. Now I know that Elderly Entitlement exists, but still, when you're spoken to by someone a generation older than you, you need to mind your manners. Is this rule out the window? I just felt like it was so disrespectful and rude and selfish. Am I wrong here for feeling this way?