I understand if there were some trademark issue, that they _removed_ yt.com/lush, and replaced it with 301 to yt.com/matthewlush . Replacing the page with something else completely will only harm those who try to access the old link. If the company wants anything, they can get yt.com/lushcosmetics or whatever, but they shouldn't misrepresent their content. Users who have the old link expect the old content, that's what URIs are for.
Breaking links is a bad thing (TM), and google has the knowledge to know that you shouldn't break the web. Not for something this lame, at least.