A step toward fully 3D-printed active electronics

This is like posting "Landing on Mars" and all you did was catch a reusable rocket.

I think the "step towards being an inter planetary species" as a result of catching a re-usable rocket might have merit in that it makes construction of things in outer space easier (although that's probably a charitable interpretation of the statement).

My take on the Spacex is Mars habitation project is that Musk will put a bunch of edgelords on Mars, and then not really be able to follow up with adequate supply lines and the operation will be offline for a hundred years or so while the climate settles down. The people who live on Mars will then have been there alone for a century and in the 2100s we will send a follow up mission with hilarious consequences.

Musk hasn't to my knowledge financed any architectural design projects for a long-term livable Mars habitat that can sustain itself without constant inputs from Earth.

I suspect this is because the most casual analysis reveals incredible difficulties - the structures would have to be buried under a few meters of regolith to avoid constant radiation burn, and the ration of human living space to plant growing space (for food) would have to be about 1:6 I'd guess. The amount of material required to build such a structure for 100 humans? Let alone maintenance, etc.

If realistic plans were actually presented no doubt everyone would start laughing, which is why we haven't seen any mock-ups, VR models, etc.