[z9znz]

Perhaps, but some of those courses are actually useful; and some of the creators build solid businesses.

What is becoming a problem is the super low quality, autogenerated derivatives. But those are more a symptom of a broken internet (youtube/google search) than anything else. Now that garbage on youtube cannot be downvoted, and since youtube does not (has never?) shown up/down rating numbers on content before you click to view it, it's exceedingly difficult for the viewers to find the good stuff.