IMO, Sunak isn't as stupid as his predecessors and isn't a rah rah up the empire-ist. The Tories have pandered to the DUP for as long as was necessary and have never cared about NI. Now is the time to cut them loose and get a new relationship with the EU off the ground.
The ERG have been embedded in NI with Baker, who is enjoying the limelight, but also Chris Heaton Harris who by all accounts has been taking his job seriously and I think they understand NI better, rather than only listening to the DUP. Sure posing with pints of guinness and going to GAA matches can be written off as PR, but Tory SoS don't normally do this. And apparently Sunak's old college roommate was from Omagh. He might have more insight on NI than we have given him credit for.
Reality is coming home to roost: look at the shortages just due to the UK being deprioritized in terms of fresh fruit delivery. Now think of what an actual trade war, which would have been unleashed if the Protocol Bill had gone to the Kings Speech in October.
Horizon has now been re-opened for the UK to access.
Biden will now get off his back - the 25th anniversary is coming up and that will shine another spotlight.
The war in Ukraine has shown you need allies you can trust.
There is not a lot that has substantially changed from the reports to date, but lots of technical tweaks to make the Protocol actually work in practice (e.g. the UK has finally agreed to share trade data and start building the infractstucture that was needed to make it work, giving Stormont a bit more of an input).
The EU are letting the Brexiteers own the comms to give them a ladder to climb down for the sake of NI. And NI is special - some commentators seem to have forgotten this deal is only for them.
As an Irish citizen with family in NI, I'm really pleased and I hope that the DUP see sense. But as they say, they never miss an opportunity to miss an opportunity so let's see....