Can you objectively say that familiarity isn't the primary reason APL is less understandable?

Put another way, if you had 2 years of APL experience and 2 years of Python experience, would you maintain that the APL code is objectively less clear?

Is it really fair to judge languages we aren't familiar with to the extent of the language we are comparing to?

Well, to you it is, for someone else it’s “clean”. APL is a fun language and kind of my point here. Someone thought that other languages were too verbose and tried to write a language that was more expressive which a “normal” language never can achieve.

'However, to even begin to understand it you have to read an article from the original writer' - or just know APL? If you know APL, it's clear.