Even when he's breaking all the rules and norms of the Senate, when he's got the deck stacked with a Republican House and White House, McConnell is incapable of governing.
He's proven he can't even pull his own conference together to create legislation that can pass, much less work with the whole Senate or the House or the White House.
He has yet to have a significant legislative accomplishment, and thank whatever higher powers there might be for that or we'd all be uninsured without a safety net.
And:
Obamacare repeal will be back, because these guys just don't know what else to do with themselves, but that doesn't mean it's ever going to work. Not just because McConnell can't make it happen, but because this failure is going to heat up Trump's war against him. Out-and-out civil war in the GOP is going to make McConnell an even bigger failure.
Winning.