Because a LOT of people are missing the point:

No, Elon Musk is NOT serious about putting a million data centres into orbit. It can't work: laws of physics say "nope".

But SpaceX is expected to go public this year.

Elon is talking up his company's future prospects in front of gullible investors because he needs a growth narrative beyond Starlink, which is already priced in. Something to justify the Starship proram beyond NASA's lunar ambitions.

So it's salesman's bullshit, lies for fools.

@cstross It was obvious bollocks (just like hyperloop, the boring company etc…), just I didn’t know why he was boosting it as I didn’t realise he was planning an IPO this year. Tosser.
@bjn @cstross and despite being shown to repeatedly over promise and under delivery, the markets will no doubt lap it up anyway.