Compositing, not cutting - and the business case for learning it
'Premiere Pro is like mowing your lawn with an industrial lawnmower. After Effects is like trimming your beard.'
The two tools do different jobs and misusing either is described as guaranteed to look wrong - editing a whole commercial in After Effects, or attempting real motion graphics in Premiere. After Effects composites: elements stack in depth order and that order decides visibility, which is why a shape meant to hide something must sit below it and a background must sit at the very bottom. The reason to bother is commercial rather than aesthetic and he gives the figures: an original one-day-shoot commercial at $1,800, then a second one-minute commercial built from the leftover footage plus motion graphics at $1,200 - no new shoot day. That pattern is what turned into monthly retainers for a set number of commercials.
Reframes After Effects as a way to sell the same shoot twice, not as a design hobby.
After Effects is all about compositing. It's layering things on top of each other. Not so much video editing, which is cutting things side by side.