I wouldn't. Smith will be targeted when he and his QB come back, but that's not much to count on with Car's lack of QB talent. Chi has a lot of receivers, but Knox is undoubtedly the #1 and will get his own targets, which is more appealing with Chi airing it out so much. Three weeks ago, before Smith was hurt and while he was getting a TD a week, we all would've said something different; for now stay with Knox.
I believe that is what he was saying and I agree, keep Knox until Smith is back and shows he can get the ball with garbage QBs.
10 Team; 1QB/2RB/2WR/1Flex/1K/1D; Standard; Non-ppr
QB: Vick, Orton
RB: Forte, Bradshaw, Addai, Lynch
WR: D.Jackson, S.Smith(Car), Garcon, Bess, Blair White
D: Phi, Ari