He does seem to address this at least somewhat[0], but the justification is so flimsy it's hardly worth addressing. In essence, he doesn't like alphabetical ordering because the index can change when something new is added. He would prefer new folders to be inserted at the end of the list. He is evidently unaware that folders can be sorted by creation date.
[0] https://johnnydecimal.com/10-19-concepts/11-core/11.02-areas...