Go play the first game for 10 minutes (or watch a video, or even just look at the wiki) and you'll know exactly why the billboard says that and it has NOTHING to do with a graphical downgrade.

Here, I'll tell you.

It's because Blume corp (whatever the fuck they're called) is essentially like a huge company, similar to apple, just far more corrupt. Dedsec is a 'hacktivist' group that doesn't like what they're doing.

Yes, there's actual meaning behind the billboard, not just Ubisoft trash talking their own release.