ladyleftfieldlovet There remain more divisive issues in Northetn Ireland (even using that description is problematic), than the leave/remain one.
Despite the vote last week, I think there are still more unionists, and so, even if there was a referendum on a unites Ireland (which there won’t be as it’s up to the UK government to decide, ludicrously), staying on the UK would win.
Against that, Johnson is (inevitably) making a total pigs ear of the protocol. As I understand it, most businesses and people in Northern Ireland are happy with the current system, so changes which negatively impact on that might further strengthen pro-unification support.