I dunno, I disagree. They talk about the Intel from Hux as confirming the broadcast, not the first they’re hearing of it. I also don’t feel it’s redundant because everyone already knows the information, if anything the second broadcast is the redundant one. But ¯_(ツ)_/¯ of y’all don’t wanna use it, don’t use it. The first act of The Rise of Skywalker was designed with that broadcast having already taken place. I was just trying to suggest a place where it would make sense, rather than having major plot points that motivate the opening actions of the characters take place off-screen.
But the first act wasn’t designed with that plot point in mind, all evidence points to it being a last minute decision. When Hux’s message says that Palpatine has returned, everyone looks shocked, Rose asks “Wait, do we believe this?” and Ackbar Jr. responds “It cannot be, the Emperor is dead!” Their reaction clearly contradicts the opening crawl by implying that it’s the first time they heard of this, so removing the mention of the message in the crawl, like Hal did, actually improves continuity.