I don't think it matters at all for the championship. Bayern Munich will easily become champions without him. Moreover, the main competitor, Borussia Dortmund, has lost their star player Haaland. If you put that on the scale, Dortmund suffers much more. Bayern also has plenty of time to look for a replacement. The name Ronaldo is mentioned several times, but I don't think it will be him. They still have very good attackers, but one more would be nice.
It must be admitted that losing Lewandowski was quite painful for Bayern, but as you said Dortmund as well as Bayern's strongest competitor
in the Bundesliga experienced the same thing. Even Dortmund hurts more after losing Haaland, then there was the bad news that Haller,
who was bought from Ajax as a substitute for Haaland, had serious health problems, and have to rest for a long time. While Bayern can still expect
Sadio Mane as a goal-scoring machine, because Mane also when playing at Liverpool was quite productive in scoring goals. But it would be better if
Bayern before the transfer market closed could bring in one more striker. So far Ronaldo and Kane have been linked with Bayern as Lewandowski
replacements, but both are unlikely to join Bayern this year. Although Bayern ultimately failed to bring in a striker to replace Lewandowski this year,
I still believe Bayern can dominate the Bundesliga and do well in the Champions League.