Not showing up to the podium is a red flag IMO. Emotions are high in a setting like that, but you man up. Whether he would fit in or not I don't know, but if I'm recruiting him, I'm really looking hard at his personality.
My two youngest started wrestling when they we 6 & 8 and I ran the club for the HS until they graduated. I've been to hundreds of meets. Overall most parents are pretty grounded, but there are plenty of these parents who don't know how to handle things. Wrestling is unique in a couple of perspectives. Unlike baseball, BB or FB, spectators can be down on the floor right next to the mats. Your club team can have multiple kids wrestling at the same time, so you can't be coaching everyone. That means some parents will be coaching their kid. If I had a parent like Dublin described, I tried to make sure I was coaching his kid to keep the emotions tempered. The environment in the gyms with announcements and cheering going on all the time is a lot more busy and loud compared to other sports, so it gives the appearance of chaos.
If I had it to do over again, I wouldn't change a thing. Wrestling teaches kids to believe in themselves and to work through adversity. No blaming the team, coaches or refs. Like they say, it only takes one ball to play baseball, football and basketball. lol