Indeed, a good question. I already had conflicts with CGT because of links in descriptions, even if 301-redirecting to MY CGT profile. CGT should stop harrasing vendors with that. If someone redirects to let´s say "Amazon" (why ever) or the competition (Turbosquid or Sketchfab) than of course CGT has the full right to prevent or supress that, but some links are just SEO works that have a common sense for ALL parties.