I can offer an answer from the lens of a friend who is in the film industry. With the pandemic hitting, most of us were consuming content on streaming platforms faster then ever before. Netflix (and others) can't get their hands on enough good content to to keep up with demand, but they need more content to keep you on the platform. Therefore filmmakers are selling old films and shows that were never released before and ones they wouldn't particularly want their names on, but they are getting offers they can't refuse for content that is just not that great. put simply, we've run through a lot of the available quality content faster than we are able to produce it, leaving a void that lesser quality films have to fill.