How much traffic can a pre-rendered Next.js site handle?

A very interesting article, although i get 404 when following the OP post, i found the article here: https://martijnhols.nl/blog/how-much-traffic-can-a-pre-rende...

My impression of nextjs is pretty mediocre already, and perhaps this article hits because I'm confirming my preconceived notions.

Thanks anyway!