True, much of this is going to be speculation, but that doesn't mean we can't discuss it. I do think that based on this past year that there isn't much evidence that changes to the game such as bringing continuous civs will make a huge difference to player numbers. We've already had many steps backwards to try to align the game to some of the feedback the devs were getting and bring the game more in line to previous versions. Changes such as to unit placement at age reset, changes to crises, giving players more options to tweak the game to their preference.
None of it has brought players back, and I would suggest the reason is that these changes have not aligned to the core vision of what the game is meant to be, and often work against that original plan. The problem is that these changes have not actually improved the game, in many cases they make the game worse. I don't like Crises, but I don't turn them off any more because clearly the game was designed to have them in, taking them out just leaves a vacuum. I don't go to continuity mode in age resets because actually it doesn't really work that well in the flow of the game. Every time they try and backtrack it just makes the game worse.
So yes, this might all be a PR exercise, but the only way you truly get people back to playing this game is if the game is actually fun. Many of the changes they've made have hugely improved the game, and I'm confident they will get there, but it won't be by trying to placate people who I really don't think want to give the game a chance at all, and are dismissing it out of principle.