Maybe it's not a bad option, a change of scenery could be good for Bayern and also for Kompany who could do a very good job and silence the media's criticism. In any case, I don't believe that Bayer will sign a very long contract with the company... they should start with an evaluation period while keeping an eye on another technician who may be "surplus" on the market.
I think this will just put him into the spotlight and make it harder for him to avoid criticism though. I bet if Bayern draws or some players make dumb mistakes he'll take the blame too. If they're looking for a temporary manager, I believe he should not be the priority either given that he's still young and would need time to adapt and develop his tactical and man-management skills. I can imagine it will be harder if you need to manage players with big egos if you don't have any credentials in your pocket.