There was also the issue of him not being able to catch fly balls. Or throws to the plate.
People were complaining about those too--moreso him being unable to make plays at the plate, which Flores really hasn't done much of lately that I can remember. Going back to last year, I think Ramos is a perfectly fine defensive catcher. I think people were really harsh on him at the beginning of the year and I think the biggest impetus for that was the wild pitches, not a handful of throws from the outfield.