(1) The comment is not very specific as to who is doing the aiding-and-abetting. (2) The article's title describes a problem with Amazon, and the content implies that they should be doing something about it.
You say "It's a silly thing to get worked up over." The "it" is later specified as "the extension". You also say it's "merely", reinforcing that you're saying that the extension is not worth getting worked up over. My point WRT aiding and abetting, then, is in response to your comment, which is about how the extension is not worth getting worked up over, by highlighting that the extension aides people in breaking the law.
