[taurath]

Technically the framework and payload is gonna be cached by your browser. That they don't server side render anything means all that JS has to load all the content into a big engine, which takes up a bunch of network calls. Also tracking + ads.

[Nextgrid]

The framework & payload still needs to be initially loaded which can be a problem on unreliable mobile connections. Unlike a classic HTML page where a single request failing just means an image or font is missing, in this case the entire SPA won’t load and you’d be looking at a perpetual blank page.

Server-side rendering still means the browser has to parse & execute a ton of JS after the initial SSR-rendered page is loaded which is still going to be slow unless you’re running a big CPU with lots of RAM.