I could also challenge you to tell me how many of the most productive college receivers in the last 20 years were among the NFLs best after they got drafted. Here’s a hint, almost none..Quick, name the last receiver that had Smith's production and also had a big build.
These theoretical hoops to jump through to justify drafting a receiver that high are silly.
I’m not as concerned about build as I am about overvaluing the draft position in general. 20 or later is where we should be finding our star WRs, and all the current best teams in the NFL are proof of it.