Author mentions HLS contract, but their argument is that it's not taking any advantage of economies offered by Starship. It's like a 10th century trader took an offer to use modern long-haul trucks at a fraction of what they pay for horse and cart transport, but failed to update the business to take advantage of the improved range, speed, reliability and cargo capacity.

The argument is potent particularly because space mission architectures are designed primarily around constraints of the space launch systems, so choosing Starship as the launch vehicle seems to merit a large expansion in scope, if not total redesign of the program.