"They" is a he. It's one man doing the job which by itself is a big issue. The players don't play like themselves because everyone is inflated in too many ratings to the point the overwhelming majority play identical. If they were rated to play like themselves Tom Brady wouldn't have such high throw power and on the flip side guys like Charles Clay would actually be a pretty good run blocking tight end. The ratings are a scrambled mess. If you bring it up to Kane on social media he gets defensive, blocks half of the criticizers(some rightfully so), and then makes contradicting statements to back up his ratings like Wentz being rated low because of injury, yet Sean Lee has been hurt for 3 decades now and still is a 96.
Too many ratings, especially QB accuracy ratings are inflated to the point where there is no reason to go for a better QB than an 80 overall unless you have your sliders tuned to sub 20 accuracy. Then in other positions, like TE, the run blocking ratings seem so random and have no research behind them.