Wait, the resistance never got the message? Huh? Im a bit lost on that one.
It never happened on-screen. R2-D2 has this massive file transfer, and all that comes from it is "Somehow, Palpatine returned.“
If that’s all they got. They could have escaped sooner, Boolio wouldn’t need to be decapitated, etc. Since the mention of the galactic broadcast has been cut from the crawl, the suggestion has been to give this scene more meaning and see the Resistance react to intel beyond a silly line.