Update!
I got pretty good at baking sourdough! I have been baking about 10 loaves a week since I last posted, giving away as much as I can. I always get good feedback, except for the weirdos who don't like bread. I have learned a lot on my own, about how the starter works, when to feed it, when it can be used, etc. It's not "complicated" but I guess you could say you need experience.
I can make a pretty good loaf with my shitty countertop oven that only goes up to 220 C (430 F) (ideally I'd be baking at 260 C / 500 F), and a $40 dutch oven
I kind of want to start doing this for a living actually