I somewhat disagree.
Trading down is not a bad option, depending on who is still available of course.
We wouldn't have to trade all the way back to the second round either. Moving down 4-6 spots would be good and we'd still have a first round pick while gaining an extra Day 2 pick.
I think we need all the help at WR that we can get and this is the draft to do it. I think the Bills should draft 3 Wide Receivers, even if we do sign a veteran in free agency.
After John Brown & Cole Beasley, every other spot should be open competition.
I'm not saying that the Bills should absolutely trade down, but I do see the benefit of it.