I guess this boils down to the classic: No approach is universally better.

You can write a client-side application and distribute it through some CDN (like Netlify) and have no administration duties or server cost. However, your app will end up not working without JS (and your tech stack could possibly be a mess, depending on your choices). Or you can generate pages on the server which requires you to have, well, a server.

Both approaches have benefits and drawbacks.