True but that is why there is a bicameral Congress to try to balance populism vs more restraint. Large vs small. You don't want the largest state(s) trouncing the agendas for all other states and vice versa.

Sure, but that's an inherently undemocratic argument. It doesn't mean it's wrong, it's just against the principle of the people holding the ultimate power.

but its still an undemocratic process

The presidency is elected by the electoral college which is made up of one voter from each state for each rep and senator they have. If the senate is undemocratic the electoral college must be too.

There is a difference: electoral votes are bound by law in most states to respect the people's wishes. It gets much messier, and there have been presidents which were elected undemocratically (i.e. without a majority of the US population voting for them), such as Trump. But most presidents have been elected democratically, even though the process doesn't guarantee that.