Aside from never having a hotel room available on time, I have found the French to be almost universally polite and charming.
The only rude interaction I had was when my teenage daughter was not paying attention to where she was going, and spilled he coffee on a very fashionably dressed student at the Sorbonne. She received quite a dressing down in rapid fire French, a lot of which I missed, but clearly this woman had a low opinion of Americans in general, and my daughter in particular.
My daughter apologized for her clumsiness, and we moved on. Walking away, I could tell that my daughter was upset, and I told her not to worry, because she had done this young lady a great favor, because now she could have a great time complaining about the doofus Americans for at least a week!
Don’t get me wrong - of course, like any stereotype, there’s an element of truth to it but it isn’t universal.
I’ve spent a fair amount of time in France (business). I’ve also had employees that are French. I’ve had instances where they’ve been, out of nowhere for no good reason, the rudest, smug, know-it-all attitude, a*holes. As employees their expectations are unlike others too - and it now goes to our willingness in hiring them, which came from my boss (think union attitude, yet they’re white collar workers).