> You must be referring to just the table at the top, not to the detailed argument below

Well, not entirely, because in my opinion the detailed argument kind of hand-waves away the entire git worktree. Continuously switching branches inside a single large Git repo is certainly a suboptimal way to work with Git, but most of the time one should be able to avoid that with the worktree (though the worktree stuff is, of course, not a miracle cure for everything).