I'm not up to date with the history of F1 and Bernie, but he seems to have done both good and bad things for F1.
If you where to rate his performance as the leader of F1, and his impact on F1 how would you score him? Has his impact been good, does his personnel affairs bring him and by proxy F1 into disrepute. Does any of this even matter if F1 continues to grow and perform well?
My own personal opinion is mixed, the man seems to have a bit of a shady history and I don't really like him as a person. However I'm not sure that someone else, with less reputation and less international clout could drive the F1 franchise forward in the manner he has done.