Those last 2.5 years are the culmination of what happened over a hundred years ago with Woodrow Wilson when he criticised the founding documents and dismissed the separation of powers.
This [1] appears to be written from a more right-wing stance, although it could just be rightly critical of Wilson's legacy. Regardless, it's not inaccurate. Hopefully the dislike of Trump will help to shock the rest of the system back into seeing a worth in a strong separation of powers. It's not that Obama didn't also disregard them, it's just that he's far more likeable and suits the views of a lot of people. Not so great when there's an incumbent you don't like.
And that's the point.
[1] https://www.grassrootinstitute.org/2012/09/constitution-201-...