Looks like you are getting downvoted. I upvoted you, so I'll leave this here because is relevant: https://sonniesedge.co.uk/posts/progressive-enhancement
Come on, the website is only text, images, and a few forms, why would you render it in JavaScript. I don't see any additional benefit compared with plain HTML, CSS.
It is not a rich web application, even if it were.
Also, there's been server-side rendering for a while now.
Edit: Opinion