I'm happy to see your input on this, & agree with your assessment of him- I don't watch many videos on snake-keeping (nor do I have the time), but this one is beginner-oriented with some humor that's probably better omitted so as not to confuse anyone.
In my experience, switching rodents or "scenting" is as likely to work as it is to backfire & appear to make the snake more fussy. It's a gamble at best, & last resort after husbandry issues have been fully addressed. So as not to stress the snake, it's best to try as few things as possible to get it feeding.