but it’s important to not become pigeonholed and restricted because of them.

Then it's a good thing that none of these systems pigeonhole or restrict anything ;)

Just because a stethoscope measures my heart, but not my brain, doesn't mean the stethoscope is saying I don't have a brain, and the fact that I have a brain doesn't mean that the stethoscope is wrong :D

I may not particularly like the specific system that u/book_one posted – I prefer MyersBriggs and D&D Alignment – but that doesn't mean that the fundamental concept is flawed. It just means that different people prefer using different systems for focusing on different information :)