So the line of thought is: If the 100 wood logs are buildmats, then the pathfinding/AI ignores them, because they are no valid reagents. Thats reasonable in theory.
I still dont think that it has a big effect. You have read the Banners of Heart, so you know that getting rid of 6000 crafts only improved FPS by 1.
I mean, its not hard to write, I simple make a workshop that takes BUILD_ITEM:100:NONE:NONE:NONE and you can store any 100 items in it. No idea if that really helps, but someone (not me) has to to science on that. If people pack 1000 items into 10 storage workshops and it gives 1 FPS, then I wouldnt include it in the mod... not worth it. Mostly because of the micromanagent, if people need a single of these items, they have to deconstruct the entire workshop, freeing all 100 items, scattering them around the construction site.
It also doesnt work on corpses, bodyparts, plants or food. Anything that rots will deconstruct the workshop when it rots away.