I think this kind of thing is super easy to introduce with the modern practice of async everything. When I visit a modern webpage, it feels like I'm watching a

I think this kind of thing is super easy to introduce with the modern practice of async everything. When I visit a modern webpage, it feels like I'm watching a golem take form from the debris around it. It starts out as this weird ugly contentless frame, and then things start popping in one at a time. It's quite hard to know when it's done. Makes me miss the days when servers would serve me a full webpage. Browser shows me that it's loading, and once it's done it's done. It's also easier to develop sites like that, as you don't have to code your own loading spinners or make those weird "empty placeholder content" boxes that kind of show you how the site is laid out.