It’s not so much that people don’t consciously think it matters who is president for democracy, but that it doesn’t change the real power of the system. The media have sold their souls to clicks and advertisers, and neither the DNC or RNC wants to lose the cash flows this system generates in donations and special interest lobbying.
Trump has made both parties drunk on sensational stupidity.
Those “stupid" Trump supporters are holding trillions in stocks. So are the Democrats. Neither can afford actual values: only “always low prices" will keep the rich rich and the poor working for them to buy 'cheap' stuff.