Whats wrong if US population has voted for this? There was no surprises this time - everyone can expect what is going to happen.
Also, The first time Trump was elected, the majority of voters went for Hillary Clinton. Second time, it was still 49% versus 48% for Kamala Harris. The majority of Americans have never voted for Donald Trump nor ever supported him.
Authorithorianism also not just happen - it take years to build and destroy institutions. It took 20 years to build fascist regime in my country.
Sorry for not making it clear enough.