Try blocking Disqus with uBlock Origin, turns out you probably won't miss it

  ||disqus.com^

You could also try a dynamic filter and disable it on a per-site basis

  * disqus.com * block

Or try "medium mode" to take care of Disqus and a whole host of other third party resources that track you

https://github.com/gorhill/uBlock/wiki/Blocking-mode:-medium...