There are bad calls in pretty much every NFL game, to one degree or another. And if you scrutinized every play in slow motion, there would be at least one penalty on every play, too. And probably more bad calls. This has been the reality for the last 100 years.
And yet with all the changes - more referees, instant reply, etc., etc. the NFL has not made much progress in eliminating the most glaring deficiency in NFL officiating: the clear and obvious missed call.
40 years after the infamous Drew Pearson push-off, another obvious pass interference call was missed in a playoff game, which pretty much decided the outcome.