No. Just no
"...at the same time that Firefox is sliding into irrelevancy it's becoming a better browser. It's faster than it's ever been and uses less memory – less than its replacement, Chrome."
Bollocks. Sorry, but as an ardent Firefox user for the last 5-6 years, my experience is the complete opposite. Even with Flash disabled, I often find FF slowing to an unusable crawl on sites like Techradar, Quora, Tom's Hardware etc. To the point where there's a 4-5 second lag just trying to scroll down the page and even longer to close a laggy tab. That's even if I only have 2-3 tabs open.
Occasionally it might mention a not responding script, but clicking the stop the script button doesn't really result in any kind of improvement.
Opening the same tab in Chrome doesn't throw any problems.
H/W is a 5th Gen i5 on the laptop with 12GB RAM and 6th Gen i7-6700K with 32GB RAM. So I wouldn't really care if FF used a bit more RAM, as long as it delivered a slick responsive experience. At the moment I miss the stability and robustness FF used to have - even with 40+ tabs open.