There has been a very, very long string of implausible single-point failures leading up to where we are now, not even starting with ex FBI director Comey violating the rules to sabotage Hilary Clinton on the final stretch of the race. And the same kind of willful violation of rules and conventions in order to achieve what is happening now expanded from a trickle to a flood which is how that kind of thing goes.
That quite a few of the active perpetrators of these failures likely live in regret is utterly, completely worthless now.
I'm not so sure about implausibility or single point failures.
The Federalist Society was started because Bork didn't get confirmed, and for some, payback for Nixon.
The Olin Foundation, Scaife, (really hated the Clintons), and Koch were the primary funders - right wing reactionary business titans, the Fords and Lindbergh's of our time, except this time their side won out.
At their founding conference, their keynote speakers were Scalia, Bork, and Olin. They planned for the long term and have been extremely successful at executing their plan, creating a pipeline for getting members into influential judicial positions, including SCOTUS and in the Federal District Courts.
So, it's not surprising that we have had decisions like Citizens United, Bush v Gore, Trump v US, and such.
Also, they have long put forth the legal rationale for the unity executive, the gutting of State's rights, (unless it's inconvenient), and generally pushing the legal version of the Overton window rightward since 1982.
I don't see recent history as an aberration, I see it as they won.