JavaScript can be used to identify a user through Tor in a number of different ways. This is why Tor Browser comes pre-bundled with the “NoScript” plugin. This plugin can either reduce or disable JavaScript’s ability. When the plugin is set on the “Safest” setting, JavaScript is completely disabled. This level of security is required to completely stay anonymous and secure on Tor.

There was a point in time when I used NoScript, but years back, I stopped, as it had simply become impractical to browse the web with the degree of breakage that switching off Javascript by default produced.

I’m not saying that the article is wrong about it being necessary, but I think that from a functionality standpoint, that bar may be a high one. Maybe if you are just browsing a specific site or so, but I think that for general use of the Web, it’s going to be a problem.