That’s a good idea. This issue also might be a remnant of DOTF plot point, where the First Order has literally blocked communications across the galaxy, and our heroes try to get a message out to their scattered allies. In that scenario it would definitely make sense why Poe would be a little of unsure of the galaxy’s resolve to fight the First Order.

Using the word ‘silencing’ could be interpreted as them attacking/destroying rebel planets, as the current craw is basically saying, or it could be interpreted as blocking communications from the rest of galaxy, helping to explain Poe’s skepticism. It would also sort of explain why Lando has to physically go to the Core Worlds to get that message to potential allies, rather than being able to send a message directly from their base on Ajan Kloss.