Yeah but you guys have gone back on the promise. The promise was to try first and foremost to try and find either a trade or technical solution and if that wasn't viable as a backstop the UK would stay aligned.
Then Barnier realised what he agreed and rowed back on it saying the backstop must be NI only and not the UK. Nope it was explicitly the whole UK.
So if you want to go chasing unicorns because you don't agree with any of the three agreed options then oh well.