The most ideal situation is if we archieve 100% recycling.
In reality no thing can disappear, both matter and energy just change form. We only need to look at nature for proof that 100% reusing matter and energy is feasible. Even our “waste” wasn’t wasted.
These microbes are yet another key in the puzzle to obtain the next breakthrough. Once we master industrial chains with full conservation of matter and energy the cost of creating things will become negligible.