Your advice was to blindly overlook the fact that Sjax has 2400 carries and is 30 and just draft him over the #1 fantasy RB.
Again, I never advised to draft SJax over Jamaal Charles, who is the #1 fantasy RB.
Right now, McCoy has more fantasy points than SJax, but it's only Week 2. Other than maybe Forte, five of the seven guys you quoted me as mentioning (Spiller, MJD, CJ2tds, Ridley and Foster) are bigger disappointments that SJax, injury notwithstanding.
And I would never advise to draft starters without backing them up with quality depth--anyone can get injured, be they 23 or 30--but you said it yourself, it's very unusual that SJax would suffer a multiweek injury, and certainly not the sort of thing that anyone could predict or expect.