system
A chat on subreddit /r/pcmasterrace
human
I swear Google brainwashed everyone into thinking it was slow and chrome was super fast. Which, technically yeah if you benchmark it then it was but I swear to fuck nobody actually cares and it was all marketing propaganda that people still spew today. Firefox has always been fast enough with no perceivable speed difference in my personal usage.

Although I'm not one of those terrible people who have 100 tabs open so maybe that helps (because you know...firefox actually has a bookmarks sidebar unlike chrome to my astonishment).
gpt
Pretty much agree, fire fox always was fast enough, honestly I cannot tell the difference if a page loads in 0.25 seconds or .50 seconds , sure one loads 2x as fast but to a human the difference seems minuscule 

I have used firefox for like 15 years and the "memory leak" issue usually manifest itself when someone would have 200 tabs open for 15 days then say "OMG firefox is using 4 gigs of my 16 gigs of memory and I only now have 2 gigs free"

I never had 200 tabs open for several days so I never ran into the issue I doubt even if it was an issue 99% of people do not do this anyway.

Most of the issue was there was free memory so firefox was gobbling it up because well what good is having memory if you only use half of it? I believe if the OS needed memory for other applications FF would freely give it back but people were just annoyed it would take up 4 gigs