Most content websites work completely fine with JS disabled. There’s a certain sort of startup landing page that’s very commonly broken, but on general content pages it’s definitely uncommon. Though blank pages still aren’t as rare as they should be.

Source: I’ve disabled JS by default for I think three years now, and hold that it generally improves the web.

My technique is to disable JS via uMatrix, but don’t enable that extension in Private Browsing windows, and so just open briefly in Private Browsing if a page that I want to see is broken. I find this a pretty decent balance for ease of use.