The are two questions using the twitter tag.
With the rebranding of Twitter to X, what should be done to the twitter?
While renaming the tag is a possibility, X, nee Twitter, is also a social-media company.
Leave it alone, there are still many references to twitter on the platform
Also there are likely lawsuits over the name change as META holds a trademark on that for the social media concept.
Until they complete the rebranding and switch everything over to the new name we shouldn't bother doing anything with the tag.