His point is that Mantha only plays at even strength. When weighed for even strength points, he moves up from 215 to 85. That's good, especially given his deployments this year.
Him not getting PP time isn't his fault. He's just not a fit for what we do on PP1, and our PP2 doesn't play much, so he wouldn't be getting many points there, either.
So if he only plays at evens and his EVP is 85th overall despite dodgy deployments, what's the problem?
Saying that he isn't earning his money because our PP design makes him a poor fit there isn't his fault.
If the entire issue is his performance over the last 10 games or so, I'd still argue he hasn't been our worst forward. Eller definitely has his good days, but in a world where I'm choosing between Eller at C, Strome at wing, and Mantha in the bleachers versus Mantha at 2LW, 19/92/17 playing center between a very talented wing group, and Eller in the bleachers, Eller is manning the nacho cart that day.