It feels like there’s some connection here with the dudes who get angry when women put on makeup on public transport, and that gross creeper who runs a Facebook group with shots of women eating on public transport.
It’s like an expectation to perform some polished version of femininity for every man in your vicinity. Doesn’t matter if you’re not thinking about him and don’t even notice he exists. He has noticed your existence, and he somehow believes that entitles him to... something? In his mind you’re supposed to care what he thinks about you and he’s angry at any evidence that you don’t.