They say they use X because X was used in the pre Spanish languages and they’re undoing colonisation or some such nonsense

It also ties in with the wokes current hatred of the British but you know these were the same people who reposted gif sets of doctor who and Sherlock on tumblr and wet themselves over British accents only a few years ago

Yes, X was used in the pre-Spanish languages... as a first letter. Off the top of my head I can't remember seeing it used all that often as a final letter.