Good luck finding anyone who watched Clemson and would describe Wiggins as a physical player. He's slight and has room to add bulk, so maybe if/when he does that he'll be a more physical player, but he's not that now.
I watched Clemson. I saw a CB who was surprisingly good in press coverage and at winning at the catch point despite a WR's size. He is slender, he gets pushed around because of that. No doubt. That doesn't mean he doesn't play with physicality. Big difference between being a finesse player, and being a light player. Biggest one being the willingness to initiate contact, and play through it. Wiggins was never afraid of contact, he just wasn't good at it. lol