IQ is pretty much a bullshit measure that largely correllates to education and economic standing than anything else. There isn’t some grand variance in intelligence, actually, what’s at play is competing class interests and socioeconomic factors determining diet and access to education.

That’s the least of bourgeois democracy’s problems, and such suffrage gatekeeping was banned for very good reasons.
Previously.

Hmmm yes let’s give the bourgeois state further incentive to deprive the people it doesn’t like of education