"Am I offended? Sometimes,"
Now imagine that the majority of non-American's believed the stereotype and felt it perfectly acceptable to promote that misrepresentation along with all but the very minority of media recognition referring only to the negative interpretation of "being American". Does being offended sometimes start to be more often? Consider it too the point that your friends and relatives start referring to themselves by other titles to avoid being branded "one of thems eveeil Americaners".
The problem is still not that there is negative connotations associated with "hacker" but that the author can only seem to recognize the negative connotations and takes a defensive authoritarian stance to support there continued use without consideration of the positive connotations they disregard.