The answer is that we have a system of checks and balances in the federal government which are meant to ensure that one branch doesn't overshadow another. The states and the electoral college were supposed to add another layer of said balance, but what they've done is shifted power further towards the federal government advancing rural interests.

Many of those rural areas could not survive without the federal government's aid because they already suffer from dwindling infrastructure and population. Now if you want to break apart the federal government entirely from the equation, then you would also have to agree to let those rural areas die out instead of being propped up through subsidy and taxes from the urban taxpayer's pocket. Otherwise you would be arguing that not only do the rural states get to dictate policy, but they also get to benefit from the GDP generated by the urban states. Why is it fair then, for the federal government to give preferential treatment?

You just made his point.

The balance of power is working precisely because the legislative is very much majority rule.

As such, if the executive did away without the electoral college, it would also overrepresent populous, majority populations.

By doing away with the electoral college , you literally destroy whatever is left of the Republic