You underestimate how much knowledge it actually takes to do selfhosting stuff. To truly explain things. This stuff is clearly aimed at really low prerequisite knowledge people. It’s only with pre-req knowledge that you can skip out on a lot of content. This is the exact same complaint I got when I was teaching certain 100 level courses at a major university… 135 hours of coursework just to get students to a baseline competence on a number of introductory topics for IT… 14 hours for basic self-hosting knowledge is likely not enough to actually be sufficient either (which is likely why they specifically hamstring the options and go straight for using just one specific software)… But it takes time to explain all the items that goes into everything you need to know for self-hosting.