This is true. A US president who has strong support from a majority of voters of his own party can act like a dictator. So if 51% of Republican voters (which may be just 25% of all voters) support him no matter what, then he can act like a dictator. This is because Republican members of Congress who are supposed to rein him in are worried that they will be voted out if they anger the 25% of voters who support the president.
The fact that 25% of voters can set the direction for the whole country is indeed a defect in the system that is not easily rectified.
But if Republicans are defeated by Democrats in the upcoming midterms then there is hope. That's how we are going to recover.
Countries cannot put their economic and physical security in the hands of a few thousand mouthbreathers in Pennsylvania or Wisconsin every 4 years.
Europe is rearming and talking about a continental nuclear shield. China is selling US Treasuries.
Middle powers like Canada that do not wish to become a U.S. protectorate are looking hard at what is needed to secure their futures.
A President Newsom, though a welcome change, does nothing to reverse these vectors now that they have been started.
The times to stop this were Nov 5, 2024 and Nov 8, 2016.
Where is the recovery?