I consider this highly plausible.
There is an unfortunate delusion here that homebrew are the Cinderellas and TX are the evil stepsisters. Hence the quixotic and truly pointless "don't link to TX but everyone else is OK" mantra which misses the big picture that Nintendo hates EVERYTHING that isn't 100% Nintendo approved.
You can how ever link to sig patches though, which are not included in atmo as far as I know for the exact reason that they allow "piracy". Go figure.