I never watched AllEars, but the algorithm fed me Mammoth Club and I've really enjoyed their videos. I've said it before, but I really like their editing as it includes bullet points/pricing/info in text/graphics on the video itself. I really dislike when videos (of any genre) are conveying lists or things of importance but only say them. Maybe I need that visual cue to absorb the info.
Whatever their business plan was, they did do a Q&A on Instagram (I think that's where it was?) and said that things they'd planned for further out in the future are able to be moved forward due to their viewership/success so far. I take that as a good sign. They seem to be great planners and hitting a number of platforms that cater to lots of different ways to consume 'content'. IIRC, only Molly is fulltime, so their revenue could be going to improve their equipment, streamline their editing, expand their subjects rather than paying 3 people.