I don't have a problem with them doing it but they are doing more serious marketing than hunting and I see more self promotion and product promotion than I do sport promotion.
I'm friends with a couple of the guys and they are good dudes but I wouldn't look to them for actual hunting advice as they just aren't that proficient.... yet
Some of those guys are more serious about selfies and hashtags than they are about the actual hunt but I see your point
That's pretty much the case with most leisure-time endeavors these days.