To refocus the discussion, the core concern is: this section of Des Voeux Road West somehow got highway=secondary , which seems like a mistake, or somehow doesn't fit OSM Global standards.

Either I missed something, or this is a real mistake. Disregarding my doubts on the "functional only" doctrine, it seems no problem if we demote this section (back) to tertiary level.

Alternatively, which means I missed why this section should be secondary, do we have some elaboration on why this section is secondary? Hopefully this is not because "two tertiary roads join together to become secondary" which is just a very flimsy reason; tertiary roads can join together to form a wide network of tertiary-only roads, no reason why not.