Yeah, but if your website with, you know, text and stuff, doesn't do any stupid and unnecessary crap, it doesn't matter where the nonexistent unnecessary yet expensive code doesn't run.
But for people who are developing websites that are more than just text, this is an excellently written article and great advice.
It's funny, for mobile app dev it feels like the community are a lot of focused on staying off the main thread, this is the first time I've come across one for webdev.
What's your point? Are you saying all animations and rendering are unnecessary?