The OP Article is a rather predictable pro-Sanchez/Anti-Tebow piece of "unnamed source" propaganda/speculation/rabble rousing. Like most media, it's primary goal is to elicit outrage and website hits, not accurate reporting. Since Sanchez play cannot be defended, the only option is to denounce the other QB's.
The rest of this season will be chock full of similar pieces of all stripes, full of "unnamed" sources, broad denouncements, zealous defenses of specific players/coaches performences, people thrown under busses, etc, etc, etc.
On this one, Sanchez play speaks for itself, the inaccuracy, the poor field vision, the poor reactions to pressure and the consistent turnover threat.
What one chooses to hear is up to them.
Since the odds (and salary) say we're stuck with him as our #1 both in 2012 AND 2013, it really doesn;t matter what we, or Manish, or his "unnamed sources" think.