Most, if not all, of that relates to before he was president. So, we can both agree that it was inaccurate hyperbole to label "most aspects of his presidency ... several decades too late", no?
It relates to his character that makes him the wrong person for this time. He's someone who has built his career on making a virtue of moderation and bipartisanship. He ran for the primary in 2020 promising to be the candidate who could work with Republicans and reach across the aisle. He was elected at a time when the Republicans have been as recalcitrant and obstructionist as ever (as they have been since Clinton's second term). He has been unable to adapt to this reality and unable to have the polity adapt to the reality of his presidency. So no, he's several decades too late. In a time where things are getting further away from where they need to be, he's not been able to turn things around.