Firefox with arkenfox.js: Are these extensions still useful?

After a long while, I checked back on the arkenfox.js github page, and they no longer mention two extensions I still use: (1) CanvasBlocker (because if Resist Fingerprinting is enabled in about:config, the per page zoom levels get changed and that drives me crazy), and (2) Smart Referer (because, well, it was recommended). I...