I'm getting very nervous about manned propulsive landings. I know it's been done before, e.g. the LEM, but that at least had an abort option available and the flip manoeuvre seems to introduce a lot of unpredictability into the process. I wouldn't be surprised if they take up a Crew Dragon with them in a cargo bay to bring the crew back down separately for the first manned flights, until they've demonstrated a strong track record of successful propulsive landings.
As for Lunar Starship, it's massively overengineered for the Artemis requirements, capable of taking 100 tons to the Lunar surface. That's great for later missions to set up a base, but even then you'd likely need a crew version just for shuttling people back and forth. So I wouldn't be surprised to see the first version of that to be somewhat scaled down from the concept art. That should massively reduce the number of refuelling missions needed for the early Artemis flights.
As for Lunar Starship, it's massively overengineered for the Artemis requirements, capable of taking 100 tons to the Lunar surface. That's great for later missions to set up a base, but even then you'd likely need a crew version just for shuttling people back and forth. So I wouldn't be surprised to see the first version of that to be somewhat scaled down from the concept art. That should massively reduce the number of refuelling missions needed for the early Artemis flights.