Sorry brother, but I disagree.
Thus far I have not seen someone shut down Mike Gesicki. He may have an off game, but he is too long with too great of a vertical jump for CB's to really contest him ... and he's too powerful for those DB's ... and he's too fast for any LB who could match up with him physically. Mike Gesicki is a matchup nightmare and a dominant chess piece. As he grows as a player he will blossom into a true star, IMHO.
Now that he's staying healthy and playing consistently, DaVante Parker is a true #1 WR, and he wins his 1v1's. Not sure how much more you could hope to get from him.
Jakeem Grant is not the best WR, but his change of direction is legitimately elite and his speed is legitimately elite. Both are in contention for the best in all of the NFL. Those physical traits scare the hell out of all defenders. Only DB's have any hope of covering him, and any safety with half a brain shades to Grant's side or risks a TD on every play. Almost all CB's either try to win the "bump" at the LOS and pass him off to a zone or safety over the top, or they stay WAY BACK and try to keep him underneath them, basically giving him the reception if he was targeted and actually snagged the ball. They are almost wholly focused on preventing the run after the catch, and have already sacrificed the conflict of actual coverage.
Those are real mismatch pieces. Someone like Albert Wilson, or now possibly Lynn Bowden Jr., are other difficult matchups.
Is it perfect? No. But we do have those guys.