The "real" refs have been doing that since the beginning of time. I'm honestly not seeing many more "strange" calls than with the "real" refs, although the announcers like to make it sound like every call is wrong and that this never happened before. But I know I've seen refs signal the wrong team has had penalties, have called "offsides" on the offense (no such thing), and we all know they've made mistakes on possession, fumbles, penalties, etc, etc, etc. It's just magnified here because everyone's yelling about everything (including how a late hit isn't really a penalty unless there was intent to injure. )
Seriously, you've never seen that happen with the so-called "pros???"