Pelican is using a do-confirm method from a mnemonic. He just doesn't like calling that a checklist, but it is.
He advocates using the aeroplane as an aid memoire. That's not a checklist.
A C150 checklist is a multi-page document a stude, after starting up at after fueling, shuffles through religiously mentally ticking-off boxes
without thinking about what needs to be done while the engine roars away at post-start high RMP and the aeroplane blocks the access to the fuel pumps for the waiting queue.