I think it's because they don't also result in an increased CCV and the disparity between the numbers can be awful. It's nice to have a lot of subs, but if none of them are really watching you/interacting with your streams, it's little more than pointless. Shorts audience and streams audience may be aliens to each otherI am surprised more people don't abuse the hell out of shorts tbh. They grow your sub count immensely for much less effort than longer-form content.