an educated electorate is going to make better decisions

I have seen no evidence to this effect. Consider South Africa under Apartheid. Once an individual realized how they benefited from systematic oppression of those below them, more and more fell in line. It is the "uneducated" underclass that made the revolution possible. And it was only possible through a strong social network that defied the "educated" understanding of micro-ethnicities that the Apartheid government sought to entrench.

Same with Israel. You've got tons of educated professionals in that country who are explicitly and knowingly there to participate in a genocide. The Palestinian opposition has no education infrastructure. They can only resist through social cohesion and trust networks predicated on faith.

The UK, another excellent example. A massive university system that largely exists to reproduce neoliberal ideological beliefs in a population that manages a predatory financial system and an arms export industry.