Exactly, this article was born when I searched for one video about dumbell exercising and clicked one single video, since then I have clicked more than 50 "I'm not interested" and "Don't recommend from this channel" but YouTube still recommends a lot of exercising videos despite only have seen a single one, the tastes extrapolation YT does is just plain ridiculous and if this is the best "machine learning" at google can do its extremely disappointing.