I use S3+Cloudfront for static sites and Cloudflare workers if it needed.

It's always crazy to me that people will run a could be static site on Netlify/Vercel/etc.

We've used Netlify at previous projects, we used it because it was easy. No AWS accounts or knowledge needed, just push to master, let the CI build (it was a Gatsby site) and it was live.

I think Netlify is great but to me it's overkill if you just have a static site.

I understand that Netlify is much simpler to get started with and setting up an AWS account is somewhat more complex. If you have several sites, it's worth spending the time to learn.

Since everything you need to run "a full SPA" is to serve some static files over an internet connection I'm not sure how that tells you anything interesting about the platform. It's basically the simplest thing a web server can do.