N!ce necromance.
L6 aside, if you have upgraded it accordingly, it matches some 6 buildings worth of production with various chains, letting you switch over to something else without having to build something. The buffing is a downside alright, though if you are already complaining about it being useless, you ought to be having a steady stream of beansoup to begin with, either by searches or excess beans to buy them.
It has situational use (which only happened once so far...) but it's still nice to have the ability to switch around on demand. Granted I'm not all that happy overall with the thing as it was already "underperforming to equal numbers (6) of whichever thing you were planning on using it with" and L6 just makes it worse, but with so many dead spots on the island, I'm keeping and using them for better efficiency.