I agree totally with what you're saying. Just about every team is striving to have every guy on the 40-man roster to be an everyday professional ballplayer who respects his teammates, the organization and the jersey. Some, like Rosenthal, allude to it being racism but it isn't because they are minorities that guys like Carl Everett, Milton Bradley, Gary Sheffield, Orlando Cabrera keep getting bounced around.
How can anyone even hint that Manny was traded at the very least in part because he's Dominican is beyond me. Rosenthal comes off as a guy who just landed on planet earth, is watching baseball for the first time and was asked to write an article about why the Sox appear to be so white.