Thing is, we're currently playing a very special season. Only twice a team had more points than us after 18 matches: 49 in 2015/16 and 50 in 2013/14. So essentially, only Guardiola coached Bayern teams with Ribery, Robben, Thiago, Müller, Boateng, etc. in their prime. If that's the expectation, you have to fire every coach who's not named Guardiola. Before the last match, Tuchel was actually on track for the best points total in seven years or so. And he has such a thin squad that a few times only four players were on the bench and has to play players out of position to field a decent starting eleven.
Can't imagine they'll sack Tuchel with that in mind. Especially not after the Nagelsmann debacle last winter.