Probably cause most wrestling coaches wrestled growing up, so they got that discipline and dedication that
@Stargazer Rex was talking about, whereas a lot of pee wee team sports coaches are just dads wanting to spend quality time with their kids and parents that use their kids sports as their community social circle(and fuck parties), nothing wrong with that and its beautiful that theyre dedicated to their kids like that but it doesnt breed the same kind of hardcore cult like mind set you get in amateur wrestling
I was married into a wrestling family for a few years in the 90's and they was absolutely insane for wrestling, it ruled their lives like Xenu, literally every day was dedicated to wrestling in one way or another
Lucky I made it out before they forced me to stop being a fat lazy bum and actually do something with my life...