Many people have done this before; the one that just bothered me now is in the US politics thread, wherein whatsasheep linked to some interview with trump on 60 minutes; no explanation of what's said in it, why it's worth watching any more/less than any other interview, no commentary on it or the issues.
Adding 16 minute videos with no explanation is unhelpful and annoying. It also makes discussion more confusing, as most people didn't watch the long video to see if it had anything in it, but a few people did and may respond to it, which makes it harder for the rest of us to assess that as we haven't seen it. And because it's a video and not a transcript or something, it's much harder to quote/discuss.
I think at the least, there should be a few lines of commentary on the video.