Seems like Astro is sticking around. Glad to see improvements happening at a good pace for the project.
I know the people behind it did the now defunct Snowpack project and maintain (at least nominally) the Skypack project, which I think at some point they were going to attempt to monetize but that never went anywhere.
Seems like their 3rd project struck gold. Good for them!
Our docs is also built with Astro starlight.