This is an EXCELLENT add-on that makes Disqus actually usable. I've just confirmed that it seems to be working perfectly with both the new Disqus and classic Disqus which is still available in the login menu.

Thanks very much to the developer for updating this add-on so quickly to account for the new Disqus user interface.

Works well. Wish I'd found it months ago.

Awesome stuff! That extension has all the functionality out of the box and works flawlessly for me. Please read the instructions at support site (which is github page actually), to find everything you need (I was searching for "Expand all" button myself). This is the only tip: that tutorial should be more visible to users.
Otherwise great job, thanks!