Why wouldn't you trust Shapiro? Do you automatically not trust everyone you've never met or dealt with before?
His awful draft record and inability to build a roster outside of trades made with a team that was about to be contracted don't inspire much confidence. The fact that his Cleveland teams averaged less wins per year in his reign in the worst division in baseball than the Jays did in AA's reign...also does not inspire much confidence.
But I do agree, considering he hasn't even started yet pretty dumb to declare him a failure already.