Counterpoint. I have a Dell laptop from 2017 at work. I keep it around for plugging in to network equipment and that sort of thing. I've had Win 11 on it for the last few years, and it was getting unusably slow. Also, the battery, even though replaced in the last year, would only last about an hour of normal use. I had a similar belief about browsers and the web. No matter how light your OS, the browser and web experience is the bottleneck. But then a couple weeks ago, I installed Arch and IceWM with Firefox. What a difference. The thing is snappy, even in the browser. And the battery lasts all day. I was blown away.