> Does anyone seriously still believe this?

I do. It’s not his singular focus. But he continues to personally invest himself in pushing the boundaries of human spacefaring capability. That goal seems more personally invested to him that it does to e.g. Bezos, who mostly has a rocket company to look cool.

I know there's a risk when Musk's name comes up that everyone takes "all against" or "all for" approach - very polarising figure.

But I see a lot of that announcement, and the others someone else pointed to as his "aspirational, but ultimately never going to happen" goals - whether he believes the claims are achievable, or not, he says these things to energise people to working/paying for him to try

It costs him little to nothing to say, and other people's time, effort, and capital to try (and succeed/fail)

Tesla is falling to pieces now, and SpaceX is getting loaded up with completely unrelated projects (xAI) in order to try and make it look saleable (I guess) - it's very difficult to see the Mars announcement as anything but hype.