Still on Win7 here. Ditched FireFox many moons (heh!) ago. Palemoon + NoScript (just allowing the top page works for most sites) + VPN... AFAICT I’ve been pretty safe out there so far...
Until recent upgrades on Firefox I was using No Script and loved it. After the Upgrade Firefox is crashing a lot. And is bogged down with scripts.
I look forward to having time to work through fixes for those things. Right now far too busy to take the time.