I'm pretty sure having the Moon landing later was the original Artemis plan. Test out the lander, suit, etc. before landing. But they pushed Artemis 3 landing forward to get an exciting Moon landing to encourage the public, and win political points (I remember this was a Trump first term directive). Then build out the infrastructure. Reads like they are going back to the original idea of building infrastructure first then landing.
Also, I believe canceling Block 1B might mean Gateway, the small station around the Moon, Gateway, isn't happening. SLS Block 1B and EUS were required to deliver I-HAB to the Moon. Maybe some other launcher will pick it up?
Original Artemis plan before Art 3 was moved earlier.