As someone who tries to build things myself, I think of it as a valid way to monetize what you have learned as passive income to make up for the time it took you to do it. Another well done example is https://faroutride.com/ . They have a very detailed and highly useful journal of their camper van build.

I might be missing something here, but I'm not sure this makes any sense to me.

Why should you be owed more than a yurt should you decide to build a yurt? If you're making a post to advertise a service, all I expect is a notice disclaiming as much. Otherwise, it certainly feels dishonest.