I'm really not at all on the Kirk sucks bandwagon. Both his first 2 years would have likely gone for 800+ if he stayed healthy.
Last year he had 6 TD's (same as first 2 combined), 13 yards per reception. He's still only 24.
We just use him REALLY badly.
For one, his snap share was down from 98% in 2019 to 78% in 2020. I can't think of any possible excuse for that given the WR room we have. I assume we are blatantly advertising we are going to run the ball.
Even on less snaps his target rate fell from 24% in 2019 to 16% in 2020.
We barely move him around, he played 89% of his snaps wide right and we basically say to him "Run these 3 basic routes 34 times a game vs the same CB and see how that goes for you". His route tree is basically go's, comebacks at the sticks and out routes at the sticks.
And he has no help, none of the WR's do, we don't run any combination routes to help WR's get open. All of them are asked to just beat their man 1v1. Go watch the help Cole Beasley gets in the Bills scheme to understand how he did so well.
Hell, he had 10 rushes for 97 yards in 2019 and we even stopped giving him them this year.
Is Kirk great? I really have no idea because we abuse him in this system. If I was Kirk I would want to leave it's that bad. I do however suspect he's much better than we allow him to be.