Wahern is referring to the Sapir–Whorf hypothesis[0] (Linguistic Relativity). I do find that this is also often misunderstood. I'm in your camp about the directions. I've always viewed linguistic relativity as just saying that your language is a framework. It should be relatively obvious that if you use something a lot that you'll be good at it. You'll find that mountaineers, sailors, and pilots are better than most at of the population because they use cardinal directions a lot. It is experimentally provable that you can make your brain prioritize rather arbitrary things. For example, get a watch and set it to beep every hour. You'll probably get a better sense of time (especially if you can get different tones for 15 minute intervals). So what I'm saying is that the weak Sapir-Whorf is well recognized (what we discussed) but very few realistically believe the strong Sapir-Whorf.
But either way, if anyone reading these comments hasn't been interested in languages before I promise you that they are a lot cooler than you imagine. Far from just communication (which is rather incredible in the first place) and if you're interested in LLMs you should learn a minimal amount of linguistics.
Alot of the literature also makes hay about these language speakers having preternatural skills at maintaining a cardinal orientation mentally. I don't doubt they're good at it, but I suspect that that skill is something that has only recently become uncommon in the industrialized world. As a kid growing up in the U.S., being able to keep track of cardinal orientation was something I understood as a skill expected of men, and not by tracking the sun or consciously using other obvious markers. It was quite obviously a vestigial gendered skill at that point--noteworthy if you had any proficiency at it--but clearly one within recent memory of male adults. Moreover, AFAIU, there's also research showing that Americans tend to use cardinal directions and navigation more than many European countries, presumably related to our lived geography.