It is not the powerpoint phase. They have already taken many employees and put them into BFR construction. They already researched SSRP for Dragon. It is not a distant "2043 to Mars" thing like NASA, BFR tests are only 2 years away. BFR will have to be delayed by a factor of 4 for NASA to have a chance.
Maybe there's a more efficient way to recycle air though. I wish Musk would talk about that.
Also, the ISS is a modular, international, very finicky station. On the ISS, 5/6 of astronauts time is spent on repairs. There are too many sub-sub systems and different modules. The BFR is an actual spaceship, made entirely by a single company, and should be more robustly designed. They could have more unitary systems.