I didn't downvote you for dissenting, and I explained this in my comment.
But what can we take away from the anecdote? We don't know anything about your system's hardware components, we don't know if you're using X or Wayland, we don't know which versions of Firefox you tried. We've not seen any BugZilla reports or crash reports. We don't know what websites are problematic.
I would have no problems with folks saying "on device X, I had issues where the Firefox would use 100% of a CPU core when I visited website Y. Here's my https://profiler.firefox.com/ link, I reported it on BugZilla but the bug hasn't been fixed yet.". That's specific, useful anecdotal information that developers can follow up on and users can use to evaluate whether it's a deal breaker for them or not.
Generic comments like "performance is terrible for me, I've tried multiple times" are just going to get replies from users who've had no problems at all.
This thread is full of generic comments and anecdotes devoid of details. Did you downvote all of them as well? Or just the ones that don't agree with your opinion?
This is Hacker News not BugZilla. It's perfectly fine for users to expose their anecdotes without having to provide extensive details.
