People don't like to be reminded that they're hanging out at the Nazi Bar.
Standing outside and looking through the Nazi Bar's window is still pretty much hanging out at the Nazi Bar. It still brings traffic and attention to their establishment.
Sure, it's not buying drinks from the Nazis, and that is an improvement over being inside and giving Nazis your money and engagement directly. But it's still hanging out at the Nazi Bar.
Standing outside and looking through the Nazi Bar's window is still pretty much hanging out at the Nazi Bar. It still brings traffic and attention to their establishment.
Sure, it's not buying drinks from the Nazis, and that is an improvement over being inside and giving Nazis your money and engagement directly. But it's still hanging out at the Nazi Bar.