Because when they get lucky but perform shittily, numb nuts like theblujay wet themselves. So you do some wet blanketing because, surprise, luck exists in baseball independently of skill. So now they think every time Sanchez improves, they have to "call people out" on stuff they never said or implied in the first place. For example, Sanchez goes six, walks 4, strikes out 3 gives up 1 ER. That is a shitacular start that was almost pure luck, but dumbasses see "Earned Runs" and "Wins" are indicators of skill, which is incorrect. Argument ensues and they get a bug up their asses, so every time Sanchez doesn't pitch terribly this thread gets bumped by the moron brigade.
Most hilariously, even though they were of course wrong about Ryan Goins since they judged him to be an average big league player after a 2 week BABIP fueled, unsustainable hot streak, they still maintain he belongs in the majors...for some reason.