It would be funny if they don't win anything this season, cause when Pochettino replaced Tuchel in PSG, they didn't even win the league and Poch took massive part of the blame. But PSG was second in the French league already when Tuchel was sacked, it was just that Poch never managed to regain the first place and win the league.
On the other hand, Tuchel went to Chelsea, won them the CL, and brought them from 9th to 4th in the league. He deservedly took the credit. But right now it would be deserved if he took some responsibility for eventual Bayern failures to a degree the same way he was credited in the past. Though I think that responsibility shouldn't result in him being sacked at the end of this season. A coach must be given some time surely.