Well, just tell him to fuck off and mind your own business. Snowboarding is declining anyway. Resorts are selling less and less tickets related to snowboarding every year, while skiing has pretty much stayed the same for years.
go out for a night at any party or bar and salt lake and just watch out easy it is for any skiier with somewhat of a name to get a girl. game set match.
But honestly dude, its HS. kid are gonna give you shit no matter what you do. Just tell them to fuck off and move on. Not worth the mental capacity worrying about dumbass kids.