That would make the situation even worse by reducing the pool the rich have to buy to get the majority to contribute to their wealth even more. The problems we face with democracy aren’t driven by poor education. Poor education is a component but it’s a consequence of the main driver which is accumulation of wealth in few hands. Those use that wealth to keep it and accumulate more by buying elected officials, buying campaigns, running their own people, buying the media, defunding the education system that educates the majority, etc. Reducing the voting power of the majority would make this cheaper to do for the owner class, which would lead to increased exploitation and decrease in the living standards of the majority. Eventually leading to social unrest of some sort. Instead you want to introduce more democratic power for the majority, especially where the generated wealth is separated from them - in the workplace. If you get democracy in the work place, the workers would likely vote to keep more of the value they produce, leaving less to accumulate as wealth in the owner class. Leaving less money to buy elected representatives with the owners and more money with workers to buy political representation of their own.