This is one of those major flaws in video game logic, that is still required for the games to remain fun. What weapons your character might be carrying or what clothes they might be wearing, have no affect on the world’s inhabitants in these various sandbox titles.
Thinking back to Grand Theft Auto: San Andreas, I had CJ wearing no shirt, no pants, black socks, sandals, heart boxers, Zorro mask, leopard skin hat, African medallion, a pink Swatch watch, and carrying around a Vulcan mini gun and everyone pretty much ignored me. Second I punch some random stranger, everyone knows I’m there. WTF?