Soyuz has done a good job of making spaceflight routine, but unfortunately it's a bit of a dead end (if only for political / organizational reasons, but also the technology hasn't been updated in decades).

I was directly comparing to the Shuttle, which cost more like $450mm per launch.

And yeah, maybe Crew Dragon won't drop to $6mm, but Starship (next) pretty plausibly could, if it works.

The RD-180 is an extremely high performance engine. It first flew in 2000.

I think that comment was aimed at the architecture. Soon all non-reusable systems will be out of date.

You cut off the bit where it was made clear that was in comparison to the Apollo and Shuttle missions. Please don’t knowingly take quotes out of context and use them like that. It’s really unpleasant behaviour.