^^ There is so much profit in exploiting illiteracy and ignorance.
On top of being scammed, receiving accurate medical treatment relies on you knowing how to do your own research, and too many doctors take illiterate patients less seriously.
If you become a victim of a crime or are accused of a crime, you need to be able to read the papers a cop or lawyer puts in front of you. They can happily take advantage of your ignorance if you give them a chance.
This list goes on! Landlords, real estate agents, accountants, car mechanics, bankers, phone companies, customer service, contractors, childcare workers, e.g. any other human you rely on just to live your life will expect you to be literate and capable of making smart decisions. It is not their job to supplement your ignorance. It is not any well-meaning individual's job to make sure you paid attention in the same classes they did. And most of them know this and will not wait for you to figure things out.
It won't be a scam, it will just be business.