And there'd be people who complain about Robin. Doesn't mean the film would be unsuccessful.
There's challenges to adapting Robin, sure. That applies to every character in one way or another.
We're talking about one of the oldest, most iconic characters comics have ever created, known around the entire world and seen in cartoons, movies, games, and tv shows for eighty years. We live in a world where a talking raccoon and a walking tree have become super huge hits.....you really think Robin is going too far?