Stupidness, intent, or lack of skill?

For some time now I have always noticed that overtakers are slipping back very scarcely and immediately before the outdated vehicle. Since I myself am quite often comfortable with 120 – 130 things on the track and therefore quite often overtaken, I have noticed that this immorality is taking place more and more frequently lately. Sometimes I even have the impression that here a damage should be done with intention, because nothing is easier to swirl up small stones, which then the Nac last week, I had the pleasure of having an idiot pull back right in front of me when I was absolutely free, and I also got a stone against the disc promptly. Luckily nothing happens (only a very small crater). Sovie stupidity can’t exist, it has to be intentional, right?