I’m not sure if what you shared invalidates what I said at all… Wikipedia is 1st of all not the best source for these kinds of things. But even they say the policy only applied to 35.4% of the population only 4 years after it was first implemented. And it was loosened up even more over time.
What are you trying to say with that quote…?
My dad has the same issue and my girlfriend also had. I was able to help her, he is a lost cause.
But honestly it’s really basic. Just don’t yell while sneezing. Sneeze without vocalising at all. Even if it’s “strong”, it won’t be nearly as loud.
This is just like “muscle memory”. You one day started yelling while sneezing, and it became subconscious.
If you consciously try to not do it every time you sneeze, that too will become subconscious and “muscle memory”.