You’re right - one of the great unheralded achievements of modern computing is that most people can run all the applications they need (of which there are more, all of them more powerful than ever before), all at the same time, on a middle of the road laptop, and never have to think about it. You launch them once, when your computer starts, and that’s it.

Office, Excel, Figma, 5 other web-apps, Slack, 30+ websites, Spotify - no problem.

He uses Chrome as an example. You can think of a website instead of it, its ‘start up’ time always matters and almost all websites are slower than 10 years ago

Depends on the usecase but we find Chrome to be significantly faster than Firefox in JS performance.