Comment by wavemode
The Web is in a weird place where, most websites are so inefficient that they require the literal cutting edge of browser rendering and JavaScript execution performance to even run acceptably.
It's natural for a browser engineer to look at a website and go "wow, this is trash. Go ask the makers of this website to, I don't know, stop re-rendering the page 100 times a second."
Whereas the Chrome team's approach for years has been "okay, this website is trash. How do we make this trash run well for the users?"