Firefox’s Enhanced Tracking Protection (Strict Mode) is known to cause issues on x.com
There were no “issues”; everything was working completely fine. This is a deliberate decision to force people to turn off tracking protection.
I saw a recommendation to use Firefox’s container extension https://support.mozilla.org/en-US/kb/containers, but it’s disabled in private browsing windows, and I always use private browsing windows.
Saying “I’ve never once felt that I was missing out” is not the same as saying “I know I’m not missing out.” You seem to be addressing the latter when I said the former.
I feel that way because it’s how I feel.