As per my information and some youtubers review, youtube block few crypto channels and many of the big youtube crypto channels receive a strike on their channel. No one was sure what and why this happened. I do not think bitcoin channels will be removed because it will hurt not only the youtubers who are running crypto channels but also the viewers will not be happy by such acts and policies of youtube.
Thus, if we speculate about some hidden intention or plan to prevent cryptocurrency to further develop and dominate the world, youtube will just surely deny that, telling us it is their artificial intelligence that did the mistake and it is not upon their discretion to allow that to happen, simply, pure accidental. In which in my opinion, a vulgar way of expressing that they didn't support bitcoin and cryptocurrency as it imposes threat to their business.