Personally, I find if I need to learn how to do most anything, there's an ample of free demonstration and how to videos, for free, on youtube. There are too many "experts" masquerading as enlightened beginners on the internet. Selling a course or taking a course for course's sake, who has the time to spend doing that when you're also trying to do all the other things on ConvertKit, LinkedIn, and paying a whopping amount for pictures that are likely as over-saturated as the free ones?!
Thanks for your post, but your premise is the same one that newspapers ran into in the early 2000s. There's just too many other sources out there for free, it makes spending revenue like this early in the process hard to justify with so little immediate return.