I'm assuming mouse_ was including LGPL when they said GPL because otherwise their comment has nothing to do with the article.
They are very different licenses, so their comment has nothing to do with the article, which is what I was pointing out. Including the LGPL in a comment about the GPL makes as much sense as including Switzerland in a comment about Sweden. It's an easy mistake to make if you aren't very familiar with them, but it's still a mistake, and one which leads you to nonsensical conclusions if you don't correct it.
libVLC the library is LGPL licensed, VLC the application is GPL licensed. This plugin was of course just using libVLC so it being GPL was not the issue. As you said several other libraries unity uses are also LGPL licensed.
Thank you for the explanation! If I knew that, I had forgotten.
Ah, you're very right, I misread it somehow when I first came across it... Thanks for the correction!