Non-professionals will never get their game to the point where ‘poor’ (your words) multi-threading will hinder them. ‘Blender-Youtube’ kids will grab prefab and un-optimized assets, throw a bunch of junk in the editor, wonder why nothing works, blame the engine, then jump to the next engine they think will magically work. If their project runs poorly it’s not due to multi-threading.
Now we see the real purpose of your posts - just to take shots at the engine. Goodbye.