Batman has been at both ends of the spectrum in his long history. There were doubts in some corners the public would even accept a dark and gritty version in 1989, because most people thought of the 60's tv show more than the comic at the time. (Non comic fans were mostly oblivious to then recent gritty Miller version.) There's room for a "serious" dark knight and a lighthearted one.
Old school Mission Impossible fans were dismayed by the Tom Cruise film, but were not as visible to the media as Trek fans. There was a clueless MTV reporter at the premiere who incurred the wrath of Martin Landau.
If you're unhappy with the current iteration of a old tv show or character, the old versions are still around to be enjoyed.