[luck_fenovo]

youtube-dl this and tell me if you see an ad: https://www.youtube.com/watch?v=AMpZ0TGjbWE

I just tried and I saw one

[pmoriarty]

That's a video of an ad, which is quite different from videos that aren't ads but have ads injected in to them by youtube.

If you want to watch videos of ads, of course you can do so. But if you want to avoid them you can do so as well, by using youtube-dl.