I think a lot of this post lacks context.
Williams played, but had a 1 TFL all year. He made very little impact and seemed like a luxury pic at the time. Ratledge is fine. TeSlaa was burried at fourth on the depth chart all year, and while he had a couple catches, its the problem of drafting a 4 wr development project, and trading up for one, when again there were other needs. The rest dont matter becuase the same could be said for pretty much any 4-7th pick on any team.
Thats why people call it a failure. Little impact and when given context its gets worse.