I think they talk about it among themselves. Perhaps it's normalized, so they don't think of it as something that really needs to be addressed. We're not doing anything about it, and so we do not have to have high expectations with regard to why people are not reporting.
If you take the example of laws that are to protect women's rights at the workplace, we do have those rights, but still, because of the power hierarchies, women sometimes cannot report about sexism at work.