Currently using Icecat 60.2.0 ESR. It comes with by far the best addon I've ever used on any web browser called Searxes' Third-party Request Blocker. I just use that instead of NoScript. Icecat as a web browser has a couple of issues, one of them being the same issue that the Tor browser has. I only install uBlock Origin, CanvasBlocker (enable expert mode to see what I mean), and Greasemonkey. I don't even use a user.js file because I generally trust Icecat. I cannot emphasize enough on how good the addon is. This is still not fully available for most distros but it is available for some.