Assuming it's official material, contract issues. When Terry left the show, they no longer had likeness rights for her. Hence no Jadzia, not even in the flashbacks in the final ep. The studio either wasn't willing or just couldn't afford what she was asking. This is all hearsay but I trust the source (greatest gen podcast).
It continues to spread the word, and hopefully contribute to some Musk cultists finally pulling their heads out of their asses. Every such post is one more hammer strike to the nail.
Jeez, if you can't make money off of defense industry contracts, you should probably just hang it up.