It’s because it’s all been orchestrated and corrupt to fit the design. The only fair way to to count one vote for each voter. Whoever gets the majority of those votes wins.
It’s simple, basic and extremely hard to manipulate, sway or corrupt.
It’s why we don’t have that system.
James Wilson suggested that at the Constitutional Convention. He couldn't sell it to Madison or Hamilton, so he invented the Electoral College instead.
America would have become socialist 70 years ago with direct election of the president. In one way, you are correct; you can’t cheat an honest electorate or ultimately protect people from themselves.
The only fair way to to count one vote for each voter.
According to whom? That formula guarantees that the interests of cities always trump the interests of the countryside. There is a reason the Founders included anti-democratic elements (the Electoral College, equal representation of the states in the Senate without regard to population, an un-elected Supreme Court with life tenure). One vote for each voter ends up with the urban wolves voting to have the rural sheep for dinner.