Is this real, or just somebody's imagination?

Here's another video from AlphTech. (Ooops! Not the same folks.) The idea is the same as the one I suggested awhile back. The one I based my suggestion upon was the Saturn V model. The Saturn V model was 100% expendable. It shed mass as it went along. The first two stages did the major part of getting to lower Earth orbit. The third stage, which was called the S-IVB, finished the orbital lift, and did the trans-lunar injection burn that sent about 100k lbs of what was left towards lunar orbit.

Each part of the mission sheds mass, and thus reduces the amount of fuel needed to complete each part of the mission. By the time the lunar module set itself down on the lunar surface, there was just 1 more module left to finish the ascent back to lunar orbit. The lunar module itself was discarded, leaving only the command module to power itself back to Earth, and re-entry.

The Starship model is very fuel inefficient. That's why it needs all that refueling. With a powerful rocket, they still cannot achieve what the Saturn V did, even though the Starship system is over twice as powerful.

SpaceX has a problem on its hands. It is trying to do something the hard way. The easy way is to downsize the ship, and that is what AlphaTech is showing with this video. It isn't a radical idea. It is essentially how it was done over 50 years ago.

This tried and true method would deliver a super Apollo mission. It would carry more cargo, but it would still use the same Apollo-era methodology. Why change methodologies into something super complex like SpaceX is attempting? SpaceX needs to change their approach, but how does AlphaTech know that SpaceX is actually considering this change of methods?