Only showboating "english language for the sake of it" type use cases need much beyond middle school reading level. News and the like aren't that because they need to reach a mass market. Professional communication needs to reach the ESL crowd and be unambiguous it too isn't that. Even legal literature is very simple. Professional and legal communication just have tons of pointers going all over the place and a high reading level won't help you with that.
It is fine to be simple, and to live a simple life. That does not mean that your ignorance is as good as an experts knowledge.
Worse, teaching people to think for themselves without first teaching them how to think does not just halt progress, it put's it into full retreat.
However, I actually AM being a bit of a snob as well. I'm proposing the deeply unpopular idea that not every person even has the capability to. It seems to have become a little-known fact that fifty percent of people are of below the median intelligence.
A lot of people are reluctant to admit that to themselves. They shouldn't be... It's an enormous relief when you finally realize that you don't have to have an opinion on everything.
They shouldn't be reading anything for themselves and should be trusting the experts, even if those experts are sometimes wrong they will be more accurate than the average American.
Teaching someone to think for themselves, without first teaching them how to think is an invitation to disaster.