Even though many points made about the constitution were rooted in political theory, and make good sense even today, that doesn’t change the fact that the people involved were politicians who were looking to make the best deal possible within the context of a rapidly failing state under the articles of confederation.

This is exactly why the Senate was designed this way.

> Nor do the reasons the founders did it this way exist anymore.

Federalism still exists even if you don’t see it.