There was never a technical limitation to running software over a network, unless you go back to before computer networking was invented, far far before the internet. Putting all the capability into the browser is what people have a problem with.
The modern web is anxiety-inducing and incredibly scary to people that pay attention. I don't want to spend an hour checking the js on sites before I use them to make sure they aren't malicious/mining bitcoin/whatever, so disabling JS is an easy out that preserves my sanity, and gives me a better experience. No cookies, no popups, no paywalls, no ads, no lag.
The modern web is anxiety-inducing and incredibly scary to people that pay attention. I don't want to spend an hour checking the js on sites before I use them to make sure they aren't malicious/mining bitcoin/whatever, so disabling JS is an easy out that preserves my sanity, and gives me a better experience. No cookies, no popups, no paywalls, no ads, no lag.