I don't like what happened as a result of COIE, but that's different from not liking the comic. As a corporate decision, I hate the aftermath. As a work of art, I like the crossover event itself.

The irony of COIE is that it was created to fix a corporate problem--what they thought was stopping more consumers from buying DC, which was supposedly the over-complicated Multiverse. But as a work of art it proved how great the Multiverse is, since all of that continuity (50 years worth) provided the material to build this huge event, which remains the biggest event that DC has ever had. And then because of COIE that kind of event was ruled out from happening again.