If McCarthy hasn't forgotten how to win playoff games, then why does he almost never win them anymore in the last 7 or so years? More so, when he plays against playoff caliber teams in the season, why does he often lose?
Its not JUST playoff games. Its anytime he's up against a good head coach. Just look at their schedule. The only good team they beat this year was going 1-1 against the Commanders and beat the Buccaneers (due to a missed field goal by the bucs). Every other good team, they lost... and often embarrassingly so. The results weren't any better last year. Or the year before that, and the year before that and so on.
McCarthy gets out coached all the time by good coaches.