Yes, it's been the laughable reality for decades that loyalists have the utmost reverence and, well, loyalty to a union that doesn't know it exists. More British than the English...
I've always had middle-of-the-road-but-nationalist views (pre ceasefire my parents would have voted sdlp, since then probably all of us voted sinn fein). Most predominantly catholic areas went this way, probably largely due to Martin McGuinness being much more likeable than past-SDLP leaders, plus there was a general sense that things were improving. I don't know if this triggered the move to more staunch unionism or if it happened at the same time? None of this meant I'd have definitely voted for a United Ireland in a border poll. I was happy with the status quo and realised that a united Ireland would have come with some massive changes and probably considerable resistance from some sides, so it definitely would have been a tough decision for me. Not any more.
Alliance didn't even stand in the last council elections for my ward, which seemed strange because they probably could have gotten through on transfers. There is definitely a sense that they are a belfast area party.
All of my siblings and any friends with similar backgrounds have agreed we would vote sdlp in a general election. It's beyond ridiculous that our future in NI is in the hands of idiots we couldn't have voted for even if we wanted to (we didn't want to), implementing a Brexit we definitely rejected.
I have been annoyed with the sinn fein stance on Brexit (and not surprised John O'Dowd is challenging Michelle O'Neill for vice-presidency as she isn't well liked).They never dreamed that leave would win, but now that we are in the shitshow we are, it definitely feels that they want it to go ahead, purely because any sort of brexit fast-tracks a United Ireland by at least 15 years. I believe that without Brexit it would have happened organically anyway, with demographic changes and people becoming more liberal. Like pps said, people are retreating into their corners a bit.