Using the metaphorical (or maybe literal) model of ideas as living things - there should be conditions we can create to nurture an ecosystem of beneficial ideas. Like making a garden or farm.
Not just thinking about transmission method (memes, books, songs, art, gatherings) but also having a defined, intentional and continued program of evaluating ideas and spreading ideas.
You're right, better schooling is important. What do you think are the obstacles to getting it? Why isn't it happening already?
Does seem like there's a loop of misinformation means less effective democracy, and less effective democracy allows for more misinformation. Seems like better democratic systems are called for, like ranked choice voting, but also better news or education outside formal public school.
I also think overpowered interests (ie. rich people) can veto education on subjects that most people would benefit from. So maybe one thing is better limiting the accumulation of outsized wealth or power?