When you have a fault with your German car: "Oh, you're so unlucky"
When you have a fault with your Italian car: "Well, what did you expect?"
I remember some idiot explaining to me that I should have bought the Audi model he drove instead of my 147, because in his view, Alfa's were really unreliable. I shrugged it off and changed the subject (I knew a lot more about cars than him, and I don't enjoy arguments). Then, less than five minutes later in the same conversation, he starts talking about how he'll be leaving early that day because he's collecting his two-year-old Audi that had to be fitted with a new ignition system to the tune of about six hundred Euro, and it wasn't covered on the warranty. We soon discovered that this wasn't the only fault, and he'd had a turbo problem fixed at a previous service, and some other issue that had kept the car off the road for two days. He would not believe me when I said I had never needed to take my car to the garage except to have the annual service, and that I'd never needed anything done except scheduled maintenance at those services.
The situation you talk about in CZ is more to do with a populist leadership looking for someone to blame (Rule 1. It's always a foreigner's fault) than any long-standing racism against Italians. I'll start and end my commentary by saying that Babiš is dragging the country down into the dirt, and by diverting EU funding into his own businesses, he's getting the Czech people to pay him for the privilege, and the sooner he's charged with fraud, the better.