Re: Too late
the current government's attitude towards the NI agreement *they* themselves signed
Both the UK and EU signed it, unfortunately the EU has been particularly over-zealous about checking it. "Trust but verify" is all very well, but when 60% of the EU's external border checks were happing in 12 miles of Irish sea there was clearly some imbalance. The UK still follows the same standards & rules as it did when it was an EU member, there is no reason (apart from pique) for the EU to attempt to block goods shipments.
Fortunately both sides seem willing to continue discussions, hopefully with a pragmatic outcome.