If you want an “app,” it makes sense to do a lot of stuff client side — especially if you’re trying to edit or create something in the app (I.e. Google Docs, Gutenberg editor in WordPress, Microsoft office online apps). If you want a landing page for your new startup, static pages on a serverless architecture make way more sense. It really depends what the use case is.

Probably more of the confusion lies in the line between those things — like a CRUD app or a dashboard or management tools. You could do them server-side for better initial performance, but you could also get better interactivity client-side.

I think a lot of new projects go towards the interactivity and “slick UI” side of things which is partially why we see more focus on client-side things these days. Speaking to myself (a full stack dev with a front end focus), we front end devs would really benefit from caring about performance and stability more.