Studying grammar is studying the building blocks of what defines the way think about reality —- language.
The article calls stickler anyone who’s interested in the intricacies of grammar. Multiple times.
It's cute how you resolve (!) a debate that encompasses linguistics, philosophy, cognitive science, psychology, neurology, and maybe a couple other sciences with a single link to some TED talk.
That's basically the Sapir-Whorf hypothesis, and it's been largely rejected.