I don't think the film glorifies these people. Scorsese is known for his controversial films, but that is why I like him. All these things happened, and so to stay "true to the art" I have no problem with the excessiveness.
Was it over the top? Yes. But that is what really happened. Not calling you out specifically, but people trying to be politically correct about things like this are just pathetic. Would you want the film to be DeCaprio looking into a camera saying "kids what I did was wrong"? Furthermore, the film is about his account as to what happened at Stratton Oakmont. Did he meet any of his victims? No. The film isn't a documentary, more like a biopic.
I also thought it was DeCaprio's finest performance of his career.
There's a reference in the movie about redemption (sorry, I don't remember the context), but by leaving out the victims' stories, this isn't about redemption. Look, I don't disagree that it's art rather than a documentary, but let's face it, it's not art, it's PR. I expect better from Scorsese.