The sole reason being new posts from ones I follow is right up at top, and I can scroll endlessly through it.
Maybe this is a problem with just the Android app, then. In Android, “New From People You Follow” is first up, but it only shows 5 stories. When you click the more link, it only shows 5 stories, most often the same 5…
On Peter Simon’s Instructor, specifically, I’d say the difference between what he outlines in his booklet and the Gnostic demiurge can be seen in the Wikipedia article you linked, where it says:
the demiurge (/ˈdɛmiˌɜːrdʒ/) is an artisan-like figure responsible for the fashioning and maintenance of the physical universe.