They are far from regexes. I feel like you're equating something you don't understand to something else you find difficult. It's a language like any other. Infact it's far less verbose and shorter to read. If you've spent enough time with an arraylang you start to recognize "words" or sequences of glyphs as some complex function[1].

You might have a better time trying something like Uiua[2] or BQN.

[1] https://aplcart.info/

[2] https://www.uiua.org/tour