Earlier quoted context omitted.
Meanwhile, Mozilla is pushing forward in that area! https://blog.mozilla.org/futurereleases/2018/08/30/changing-... I'm almost 100% Firefox at this point. I trust Mozilla.
I'm on waterfox. Mozilla lost my trust when they started installing advertising extensions without user permission. https://www.theverge.com/2017/12/16/16784628/mozilla-mr-robo...
But, if you want to use a poorly maintained, out of date and insecure fork of Firefox privacy reasons (as if Mozilla is somehow terrible in this area!) then go for it, but understand you're sacrificing your security for no particularly good reason whilst simultaneously reducing their impact in influencing the design of a privacy orientated web.