> But you should then have known that Tesla/SpaceX is very well known to remove stupid requirements or solutions if there is much better alternative. And they don't leave stupid decisions there.

I've worked directly with both SpaceX and Tesla; this is patently false. Tesla's worse than SpaceX but both are terrible at removing stupid and obsolete requirements.

> I'm no engineer, so I don't know.

I am an engineer. Starship's "durability" is neither particularly technically impressive, nor evidence that stainless steel was a good, nonetheless optimal, material choice.