People can have a bad experience anywhere. There is nothing specific to Paris.
If you showed up in NYC and started randomly accosting people in French you'd definitely have a bad experience. Yet Americans do the same in Paris and wonder why people are rude to them...
That, too, isn't the issue. But I can't answer a comment criticizing my impression of Paris without referring to Paris, can I? Also, please refer to my first comment, I was trying to make a more general case you might agree with.
Your comment contains a lot of assumptions about the people visiting Paris, and since I wrote the parent, the assumptions are presumably about me as well. You are mistaken.