Below a comparison of the bottles in the red band trailer scene (top) with the actual film scene (bottom).
Apparently, a character screaming “f**k off” is acceptable, while a character drinking Stella Artois is too much for some (even adult) audiences. Assuming, that is, that the trailer-blurring wasn’t requested by Stella Artois, which is paying to promote its product and would presumably want to be featured in the film and its marketing.
It’s an indication that Hollywood is in serious denial about its product placement habit. While filmmakers and studios are happy cashing the checks that come along with an increase in product placement, they’re still ashamed to admit it — like this film’s theme, holding hands with brand buddies behind closed doors, but not in public.
Interestingly, the green band movie trailer blurs Stella beer labels, too — but prominently features the studio (Paramount) and can’t disguise the iPhones (or their distinctive sounds) used by the characters: