Are they? BTW, how many of those guys do you see agreeing to 4 years in Provo with honor code. I am not calling anyone a thug.
But, a lot of kids like to embrace their girlfriends more fully than allowed at BYU. They might want a cup of coffee in the morning. They might like to grow their hair long or grow a beard.
Who knows, when old enough, they might enjoy a beer at night. In Colorado or California they might want to smoke an occasional joint now that it is legal.
BYU pulls from a very narrow base. And, even then, on occasion a star player like Brandon Davies, Harvey Unga, J Swag Daddy, Takitaki, and others find themselves missing a year or more - who was that tight end last fall camp - gone.