“Its all about mass and weight”
Well, weight is not an operational property in space and mass is really only relevant during launch and thrust maneuvers. 33 rocket engines can overcome a lot.
Weight is an operational property getting off the ground. Stainless weighs a lot more than composites
Mass is an operational property in fairing size.
Both of which in Starship are handicaps.
33 engines cannot over come weight at distance. They are only good to get 50 tons to LEO. Not beyond. Without refueling. Refueling takes time and suffers from fuel loss. If it actually works at all.