Because it isn't that simple.

If we could just educate people and make sure they don't fall for scams, we'd do it. Same for disinformation.

But you just can't give that sort of broad education. If you aren't educated in medicine and can't personally verify qualifications of someone, you are going to be at a disadvantage when you are trying to tell if that health information is sound. And if you are a doctor, it doesn't mean you know about infrastructure or have contacts to know what is actually happening in the next state or country over.

It's the same with products, actually. I can't tell if an extension cord is up to code. The best that I can realistically do is hope the one I buy isn't a fake and meets all of the necessary safety requirements. A lot of things are like this.

Education isn't enough. You can't escape misinformation and none of us have the mental energy to always know these things. We really do have to work the other way as well.