I'm thinking it's going to break anything that the game now expects to have flammability, an eco footprint, or being recyclable. S4S should hopefully come out with a batch fix, but it might have to label everything the same - probably non-flammable for any non-wood floor/wall, flammable for anything labelled as wood, neutral footprint, possibly recyclable based on category. If you have to differentiate every single item, it's going to take forever, and a lot of CC isn't being updated any more.
I did see that people in Deaderpool's discord are calling this the Ecogeddon patch, heh. It's going to be... chaotic.