Obama effect?
No, I don’t think so. I think it’s the “the-movies-are-so-crappy-that-people-don’t-want-to-waste-their-time-and-money” effect.
For one thing, CGI can only go so far in compensating for the lack of story, bad dialog, bad acting, and interminably long and boring fight scenes. And movies permeated through and through with “Progressive” propaganda don’t exactly pluck at the heart strings with poignant story-telling and universal themes. I suspect even the teens are tired of going to grossly over-priced, badly made, sophomoric movies made just for them.
I really think that the advent of CGI started the downfall of good acting. The producers and directors rely so much on CGI they do not care who the human actors are or even if they are any good and I think they believe tons of CGI will obviate a garbage script.