I know that. But Worf is security, which the game associates with Command. So either Worf is wearing the wrong uniform or Security is operations and should wear red shirts in 23c and gold ones in the "present"
Security is part of operations, which is why they wear red shirts in TOS, but Worf wears a gold uniform in TNG. Or none of this is consistent and they should just make the low end TOS guys red shirts and not worry about it being confusing.