Have to disagree here. Cloud apps (in a form of web apps) demand more CPU performance, not less! Apart from specialized apps that really do a lot of computing (rendering, modelling, model-training) that can easily be done in cloud, most apps are slower (or functionally constrained) if they're moved to cloud and used as web app. Think Office 365 suite - every app of the suite is either slower as web app, or functionally constrained.

For me personally, web apps only got fast when I got a computer with M1 processor.

I understand the argument but I don't think that's enough – even on a recent Intel laptop CPU, you'll be hearing the fans if you have more than one of Outlook, Teams, etc. active or any enterprise security software even if most of the data is being stored on the cloud. Something like iOS or ChromeOS is a lot closer to delivering on that idea in my experience.

Indeed, WordPerfect, word, excel, etc, all worked just fine on a pentium chip of the day. Yes there was always something faster but really… it was just fine.