He also seems to make a video almost every day. That really doesn't help with the quality of the video's. I doubt there is a lot of time to do additional research on the topic, so often it seems to just stick to the basic information from some kind of article and comments (and maybe a few related articles). And is often just related to the drama of the day.
Although he does sometimes have video's that do require more research, but a lot of people won't see those as they assume low quality because of many other video's.
Maybe we have some bias on this topic, but I had the same thought. Maven is such a well known tool in IT, that I'm surprised they just created a social network with the same name. Until they get a bit famous this won't be good for SEO.