I'm going to push back against Astro because all the server island stuff is over-engineered for a blog, while in the meantime Astro is not designed for more complex sites so I'm not sure what it's purpose is really.

I would say that in the era of agentic coding you don't need any framework. Just a backend + router + markdown generator. I use Hono + Tanstack router for the first two. Tell any decent LLM to wire those up for you and you'll have a simple static site ready to go in an hour or two.