This is absolutely untrue. My French is sub-intermediate, I've been perhaps five times, and I've never had a bad experience. Plenty of people have been super friendly and I've had great conversations with people just hanging around on the street waiting for a store to open or having a break from walking.
Perhaps the core of the problem here is that many people who visit Paris are not well traveled and have only limited empathy for the seen-it-all-before-99-times-a-day locals.
I mean, if I was busy and had a job to do, and by fate alone simply happened to be near some generic tourist attraction or other, and had whiney American/English/Russian/Chinese tourists come and ask me where the closest vegan restaurant or crossfit gym was ten times an hour like clockwork, I'd also get to the point of shrugging.
This is the same genre of people who, when you ask them where they are from, answer "America", because they're honestly unaware that it's blatantly obvious to everyone else and the interlocutor was curious about city or state.
We can put it down to cultural discontinuities. They are a blessing we should revel in them while we can, because it seems that all roads lead to generic globalized interactions in a minority of languages with increasingly unsophisticated speakers and reduced cultural appreciation.