If those facts are government sources, then as you have been told before (by a member of the OSMF board, the board you repeatedly say you send my changesets to), that information isn't 1:1 with OSM's highway classification. OSM's most overarching guidelines say that ground truth is the most important, we map what's on the ground.

If a government source doesn't match what you'd see looking at the road itself, then you don't follow that source and you match what's on the ground.

If you drove along Gawler Street, Park Terrace, and Waterloo Corner Road, you'd see one of those 3 roads as being slower with less traffic.

And vandalism has a specific meaning, you keep using it despite the fact that my edits are not deliberate destruction, but an attempt to improve a map based on resources available, knowledge, and experience of these areas.