There are two key aspects here...

Firstly, we know the rules and what is expected of us when we come here, so we have no "choice" but to go along with it..

Secondly, IMHO , fasting is a test of character and faith. The fasting is only obligatory to Muslims, so non-Muslims should not be forced into not eating in public..

Having said that, non Muslims should also be considerate and ensure that they don't eat in front of Muslims during Ramadan..