I would generally agree.
On the other hand, I would also ask: is there a specific reason that these races need to be gnomes and orcs? Would you lose anything vital in calling them something else?
I would absolutely ignore the people who take issue "'cause it's different", but I think some people may be genuinely confused, and that is something to consider.
It's your setting, your world, your game. But words mean things, and deviating from those meanings should be done deliberately and carefully.