The fact is that no one cares about reusability. Expendable rockets are cheap enough for governments and commercial entities alike, even for constellation launches. Starlink architecture only makes sense as a justification for the F9 launch cadence, and even then the actual satellites are managed as trains.

China and Japan have done it. You may not like the fact they have done it once or twice, they know how to do it from a technical standpoint and that’s only gonna grow in the future particularly China don’t act obtuse.