When you don't personally experience something, it can be easy to get a distorted sense of how much it happens.
There are a lot of social problems that this can apply to but it can legitimately change the way you look at the world once you realize just how many people regularly experience sexual harassment. And while some people who engage in this sort of behavior are particularly crude and obvious about it, others can show similar intentions with more subtle acts.
This can be identifiable in one case that recently hit TikTok in which a man made one woman uncomfortable and suspicious despite not saying anything obviously disgusting.