Well it's only wasting a pick if he misses games and thats still tbd. When he plays, you know what you're getting. He put up good stats with the Pats only a few weeks after they acquired him. Now, somehow he's one of the most tenured wide receivers on the team.
The myth of assurance, safety, or lack thereof leads people astray in this game, imo. Everybody is at risk to miss games. Back in May, nobody thought Zeke or Melvin Gordon would miss time, now it's looking like a real possibility. Same for Golden Tate or Le'Veon Bell last year, Andrew Luck 2017.
It's not what you don't know that will kill you, it's what you think you know.