I don't think any of that is true at all. This is the same old "a bad thing happened and that means it's a sure thing only bad things will happen now" kind of cynicism.
Your eyes are closed if you can't see what is going on.
The winner of the election was a hard-right oligarch, who so far has consistently supported nothing but hard-right oligarchism.
A large minority of Americans only believe something if it comes directly from hard right news sources. They regard Fox News et al as the only non-biased sources of the truth. All other media is tainted by bias. Trump has a voter base that cannot be reasoned with, for any attempt at reason will be deflected or ignored.
This large minority views Trump et al at the means to reform Washington, changing the pre-existing democratic culture to one that has had it's "swamp drained". Trump's mandate is to run as an oligarch, as an autocrat, not as a democratic president. The democratic institutions are corrupt and weak, and Trump will bring a reformation of them. Anyone that stands in his way can be replaced.
This is a cocktail that can only lead one way - towards a weakening of America's democratic institutions and a solidification of control by the alt-right who have claimed power.
Those that claim power for power's sake will seek to secure it. And if they bear no love for the institutions they now run, they will seek to reshape them.
It is now acceptable for political parties in the US to be targeted by intelligence agencies. It is now acceptable to invent propaganda and distort facts, to make the truth relative. These are dangerous things to be acceptable. It will only get worse. It seems inevitable that the free and open internet will be targeted. It seems inevitable that the ability of the independent press to hold government to account will be attacked.
We have a model for how this was done before, in post-Soviet Russia. The eroding of democracy and its replacement by an oligarch elite that controls in totality the avenues to power and influence, whilst still existing within the shape of a democracy - that has happened before.
I don't think I am alarmist here. This is the trajectory of the path the alt-right is trodding. They have power, influence and a large electorate that is in thrall. Trump must be seen for what he is - not just as a joke, a thing crazy racists elected as a FU to the political elite - but as the spearhead of a movement that may transform America into a place where Trump, and his successors, are firmly entrenched in power.