Could you elaborate why conduction doesn't benefit from stirring? I believe it is even more critical for conduction than a convection vape.
Speaking from personal experience...
When using a convection vape, if the top of the herb gets browned, the air doesn't pass through that portion of the bud as much, requiring a stir. So yes, stirring is very important for convection vapes.
With some conduction vapes, the conduction can come from all sides of the bud, meaning everything is cooked pretty evenly all the way through. The Arizer Air gets a nice even burn as a result of the glass heating completely around the herb + the air you pull through from the heater. If you pack too tight though, the air doesn't pull through the top of the bud, and will require a stir.
The MFLB. Only the bottom is heated and some of the sides if packed full enough...if you don't stir (toss), you will literally only vape the bottom and maybe some of the sides. With this vape, stirring is absolutely required.
Hope this helps you understand? If the heater goes all the way around the bud with conduction, stirring technically isn't necessary, but will most certainly guarantee a more even burn and better taste, also splits your bud up allowing better airflow to pass through instead of keeping it compact and tight.