Now that is debatable.. According to animeondvd, Fansubbing itself isn't illegal if US Distribution did not license any animes. For example, if Anime X isn't license by US Distribution yet then it is considering as legal to release Anime X and share the fansubbed anime as long as it isn't sell or in any way to profit or licensed unless state otherwise.
if they sells fansub animes then I agree with you that it is illegal in any way and I would be piss off if they do.
