I've never understood why adults care what other people buy/use because it isn't what they buy/use. It always seems like hubris when people believe that their way is the best way and infer that anyone doing whatever it is any other way is wrong and whoever does it differently is stupid. Heck, I don't care if people who I'm not related to take their next breath, much less what they buy/use for anythng.
That said, you've got to wonder about the guys using BSA and Tasco scopes. Using any BSA or Tasco scopes in a serious competition seems like a waste of ammo to me, but maybe that is my hubris showing up.
Maybe they're looking to see if they enjoy that discipline of shooting sport for a season or two before they make a commitment on equipment.
If more people did that there'd be less posers and more shooters in the world.