Not everyone does this. I bought my BP as a normal and I believe she is normal. Humans kinda suck at math. Just because you learn about all these different morphs does not mean that every snake you see has a hidden gene. These genes are still rare. We see these kinds of posts all the time and most of the time I want to say "What did the person selling the snake tell you it was?" I am guessing it was labeled Ball Python and guess what. That's what you have there.