> There's nothing astro does that NextJs can't.

That's exactly the Turing tarpit argument.

It can do SSG while letting you use any framework you want. You don't need to use React. That's a pretty big difference in a thread where people complain about churn.

Personally, I don't see Astro as a must have because SSR + Interactivity can be done with a lot of tech. PHP, C#, etc. But it has a lot of sane defaults around markdown and static generation that I can recommend it.