When the Court passed the ruling granting him "presidential immunity," Schlump obviously took that to mean that he would have carte blanche to do absolutely anything he wanted once he was back in office. As bad as that ruling was, I have a hunch that wasn't quite what Roberts had in mind. (What the other conservatives may have had thought is another question entirely; I'm just talking about Roberts here.)
It should have been obvious how Trump would take the ruling, but Roberts evidently thought the Court was doing something more nuanced. (Again, I'm only talking about Roberts; some of the other conservatives may have had something entirely different in mind.) The problem is Schlump doesn't do nuance; I doubt he even knows what the word means, because it has no meaning in his black and white world view.
So Schlump won the election, by hook or by crook (personally, I'm on Team "It Was Rigged" ) and the bull was let lose in the china shop. So here we are, and here Roberts is, evidently starting to realize what kind of monster he helped to create, as the article says.
So what now? The court rulings that have been going so firmly against Schlump are eventually going to be appealed to SCOTUS, who will either let them stand or issue their own ruling(s). If the court were to, God forbid, start striking down most or all of the lower court rulings, Trump would have no reason to get rid of SCOTUS. If (as I devoutly hope), most of the rulings are allowed to stand, or are (to Schlump's horror) affirmed by a SCOTUS ruling, he'll begin to see the Court as an enemy, and he'll go after them with all guns blazing. Far be it from me to predict exactly how he will do this (I am, admittedly, very bad at predicting the actions of lawless criminals), but he'll probably start by posting blistering. condemnations of SCOTUS on Lies Social. And may whatever deity one chooses to invoke have mercy on us all!