I didn't think there's anything wrong with using a domino. Not every channel explains that you can use a dowel jig.

A real problem in DIY video is treating materials cost as the only cost to taking on a project. I've definitely seen at a bunch of them demonstrate doing a project in a way that requires a certain tool without explaining alternatives. I've seen many videos that get a job done for under 50 dollars because they have a full shop on hand.