The fun thing keeps coming up because we're nearing that warm weather blockbuster time, people want to take their kids to see it, and it's a comic book movie. This is supposed to launch DC's film universe so god forbid people expect to enjoy themselves. A movie can be dark and fun. Nolan's Batman was and SS appears to be that. People are upset because they think it's dark and dull.
Plan A: start celebrating DC's victory once the glowing reviews and 90% RT score come in. Reviews dropped and
"Reviews don't matter."
Plan B: wait for the regular people to see it and weigh in. If the people give it mixed reviews then Plan C: wait for the box office #'s.