> 'Then you ask them for a site that doesn't work' - For me it was Youtube. Debian 13, Gnome, apt update && apt install firefox, try playing a video. It's always noticebly slower, and last time it didn't even play at all. It might be skill issue or Google malicious behavior or both, but I'm ashamed to say installing Chrome was easier than troubleshooting. I'm slowly growing balls to sacrifice my comfort and migrate nontheless. But I'm tired of people pretending it's just as good and easy to use.

These are very different experiences we have. I've been using FF on Linux and on Windows since before the first day I found Youtube, and have not yet had a period where it doesn't work.

It's not pretending when tens of thousands are browsing that self-same site just fine over the period you had problems.

I've used Debian, Mint, Ubuntu, Fedora, Arch, Slackware and more. In none of them did I need to do anything specific to make FF work on youtube.