My view is that bad calls happen. Refs have to watch at full speed with action happening everywhere, and even with eyes in the sky they won't be able to catch everything, all the time. Football teams have to accept that there is a more or less random element to the game as there is in all of life.
And every team benefits from it, and every team loses from it. After all, the Bengals might not have even made it that far if the refs hadn't sat on their flag for the block in the back during Hubbard's game-saving fumble return against the Patriots, and the Chiefs had already had an interception and a touchdown called back during last night's game due to very iffy calls. It happens.
The NFL isn't rigged, but it does clearly have a problem with officiating these days. Who knows what the ref was thinking when he ran out onto the field to fix the time, without blowing his whistle, for starters. I've also never seen a coach allowed to reverse his decision on accepting or declining a penalty after it had been announced and the teams were lined up. I don't get it.
The NFL needs to address those issues and make serious moves to fix them, if for no other reason than the fact that sports betting is going to get nothing but bigger, meaning there will be even more people with an obscene amount of money riding on the refs' calls. The first step should be to making the refs full time, which to me is a no-brainer. Their integrity needs to be at least as heavily and publicly established as a judge's, and their calls need to be reviewed and standardized against a pre-defined set of standards, or else trust in their game is going to erode, probably more quickly than they may expect.