It's a pervasive, persistent problem. It's exceedingly common to talk with coworkers, or people at a meetup, who assume a bunch of domain knowledge for their domain, and are dismissive when you don't know that knowledge. And then you find they aren't aware of some other domain. The worst is when the same ideas are used in different domains under different names. There is often no level-setting, either. Compare statistics, machine-learning, and CS language about the same topic.

The 'for-dummy' books are only a tiny sliver, and it's often hard to tell from skimming a book (or from the ToC on Amazon) what a particular book's target is.