Earlier quoted context omitted.
And let's be honest, that is also partially Clinton's legacy. Him and Tony Blair, with their "Third Way" triangulation bullshit, effectively moved the Overton window to the right for good. And here we are.
As a layman in politics, why did that shift things right in a bad way? Reading a summary of "third way triangulation" makes it sound good.
Plus, you can only triangulate effectively if there are two radical sides to play off of. Once your policies effectively disqualify one of those positions, you're left alone to face the other radical group - and they now have no incentive to compromise. Which is exactly what happened over the following decades.