I proposed the Poe idea since I feel it’s pointless to mention the broadcast to be heard across the galaxy and then have the Resistance be unaware of it until Poe brings in the information (I believe it’s been pointed out in this website before).
I’m fairly certain that the Palpatine broadcast was an idea that they came up with late into production. As a result, the theatrical scene doesn’t really fit with the idea that everyone should already know about him. Rae Carson attempts to remedy this with a single line from Rey that feels super awkward imo. Obviously it is removed in the chapter I just shared.
I believe you’re suggesting that if the broadcast were mentioned in the crawl to have been heard across the galaxy then that should be reflected in this scene? I agree, but since the message wasn’t sent out to the entire galaxy in my version, it makes sense that it seems like this is the first everyone has heard about it all.
Personally, I feel like Palpatine wouldn’t send a message like that to the entire galaxy until he has possessed either Rey or Kylo. Otherwise, he is essentially claiming victory before his plan has gone through.
And as for the TFA novel, I don’t have plans to adjust it. From what I’ve heard about it, just about everything seems to line up with what I’m doing (although I haven’t read it extensively to know that for sure).