(B) No waste/by-products (e.g. filter, brewed coffee granules residue, blah blah) - so much less carbon footprint.
Not sure how you come to this conclusion. The waste is the same (if not more), just ends up somewhere else. Also, you’re adding a whole extra process (freeze drying) requiring extra energy, and water needs to be boiled twice (during brewing and at home).
Leto II probably