You have the saying wrong. It’s “The exception proves the rule.” This means that the existence of an exception proves that there was a rule in the first place. If there were no rule, you could not — and wouldn’t even think to — speak of an “exception.”
Anyway, no one is putting you in a box any more than anyone else. We’re all categorized in certain ways (eg, “Men don’t like asking for directions,” etc.)
It seems like you didn’t read the article.
No, I had the quote right. It’s a Sherlock Holmes/Conan Doyle.