I guess most people don’t have much knowledge about affiliate link URLs and how easily they can be rewritten to shift where the commission goes. I implemented SkimLinks on a hunch of websites so I’ve seen it before. Forum owners used to get upset about anyone posting product links in their comments because they night include an affiliate code. SkimLinks adds JavaScript to every page that rewrites those codes to the forum owner’s personal account. It will even insert an affiliate code into basic Amazon links that don’t have one. Once this came out, forums went a lot easier on Amazon links.
After seeing all this, the second I spot a browser extension that wants to get between me and Amazon, I immediately assume they will rewrite all the links for their own benefit. Otherwise what’s in it for them? This news isn’t much of a surprise.