That wasn't my point, but I probably phrased it poorly.
I was trying intonate that blaming the Tories for NI paramilitary groups getting mouthy when they have done for decades is a stretch.
On your latter point, I don't think that's true - the EU have shown they are perfectly willing to implement a hard border - if they were to do that again, I would not be surprised to see the seperatist para groups spouting the same rhetoric of action against it. (That is if their motivations are genuinly anti-hard border rather than anti British).