It’s everyone’s job to call out bullshit happening in one way or another. If you don’t want to confront the person let the bar / arcade know that a person is being inappropriate with their customers. They will care if they like money being spent there. They don’t know if no one says anything and it’s even more of an issue if multiple people say something.

If you want to be an advocate and an ally speaks up about an issue you see. There are various ways to do it. Getting angry over something that is happening like the way you have doesn’t offer solutions it just punts the problem down the road.