Server-side rendering is so much simpler from platforms that were designed to do it.

As a user, I despise seeing a white screen with a spinner.

Depends what you're building. If it's a dashboard app gated behind a user login, sure, have it be a static HTML file. SEO is irrelevant and you wouldn't be server rendering anything anyway.

If it's a public site and you want people to find it (ie SEO) you really should be server rendering and caching on a CDN.