Of course he is. In opposition McConnell is the prince of procrastination, the doyen of delay, the overlord of obstruction.
Despite the hostility of many on this board, he has probably actually done more to preserve American liberty than Donald Trump and George W. Bush combined, and mostly by very effectively using the parliamentary equivalent of "standing athwart 'history' shouting, 'Stop!'"
Whenever you are tempted to badmouth him for his lack of fealty to Trump, just remember that it is because of McConnell that the phrase "Supreme Court Justice Merrick Garland" belongs to an alternate history, rather than reality.