But the article seems to say that the Kodi software itself doesn't allow piracy, it's just software that third parties have written add-ons to, and those third-party add-ons give access to pirated content.

If that's actually the case, then it's hard for me to see how selling the fully-loaded Kodi box is more illegal than selling a computer with an internet connection. After all, there's third party software for computers that give access to pirated content as well, right?

edit: Ah, I guess I misunderstood the article. Some people are selling boxes preloaded with Kodi, and other people are selling boxes preloaded with Kodi+the third party apps, I guess?