I think it’s pretty obvious what the difference is between literal toddlers getting to vote (read: parents getting multiple votes) and black people/women getting to vote. I’m not arguing for meritocracy or even what the voting age should be. I’m arguing against the idea that there should be no minimum voting age.

That is just a very stupid idea. The best thing for all of us everywhere is for the most rational and well-informed people to vote. The fact that everyone gets a vote is unfortunate for all of us because that includes voters who vote against the public interest, but it is necessary for a free democracy. Children and even teenagers have simply not had enough time on this earth to make an informed decision. Even if you want to make the argument that some are informed enough, they are far, FAR fewer than in the adult populace. You do not want to broaden that window.