I barely finished high school and I can understand them, not sure why some find it so hard to, even the license texts themselves are relatively easy to read, understand and reason about, and there is tons of further reading material all over the web, some from actual law-firms that can help you understand how it applies in your country too.

I can maybe understand not fully grasping how the GPLs work (I sometimes have to look at GNUs page of compatible and incompatible licenses myself) but something as simple as apache or MIT should be so dead simple it hurts

The uncomfortable truth is that people aren't half as dumb as they give themselves credit for. Not being able to understand something is rarely, if ever, a skill issue.