Your guess is as good as mine I suppose. However a lot of my life had the spectre of and reality of very nasty terrorism emanating from Ireland, some of it very close to home indeed.
I would not want a return to that kind of stuff because of a renewed schism being created by brexit on the island of Ireland. For better or worse, both countries having the Belfast agreement, and both countries sharing the common procedures of the EU (and I am not saying here that the EU is in any way a perfect institution) has led to an extended period of peace which at one time in my teens, twenties, thirties and forties I didn't think would come about.
Maybe it will be a Whisky Galore Ealing Comedy type of scenario that will happen in Ireland, but as I have said, given my experience of the past, I have my doubts about that.