I never got into Twitter to begin with, so to me it wasn't a huge loss to see it fall apart, but I have to admit that the branding of Twitter was way better than "X". "Tweet" very quickly became part of the English lexicon, people knew what it was almost unanimously (in no small due to one controversial politician), and Elon decided to throw that away, presumably because "X is a cool letter".

Even Mastodon (which I got slightly more into) has realized how important having specific branding is to a platform like this, and uses the word "toot" instead of the generic "post".