It's not the refs as much as it is the rules. After 5 yds, DB's can't touch a receiver. The rule is stupid. Years ago, DB's could touch the receiver up until the pass was in the air. Too many ticky tack touching penalties. Too many flags.
Some bad decisions on what is a catch. Does anyone here actually know when a catch is a catch? Too many reviews. They should use the college rule of one foot inbounds. There would be less replays needed & speedier play. It works fine for the college game. If the rules weren't ticky tacky, the refs wouldn't be throwing yellow after every play.
OT's hold DE's almost every passing down. It is often egregious and still not called.
I have mentioned before that G's & OT's should have to wear some type of covering on their hand so they would be unable to grip a pass rusher. Something without a thumb would work.
Off topic I know, but another rule change ought to be the college rule where the clock is stopped after a first down until the sticks are moved. This would do away with the worst & most boring play in football - the spike. The league wants fantastic finishes - this would do it.