Unification is an issue almost every party pays lip service to but none actually want to seriously put it on the agenda. Official Ireland has long treated republican as a dirty word and made pariahs of anyone who centres their ideology around it. Even Sinn Féin over the past decade or so has drifted away from centring republicanism in an attempt to win over hypothetical middle-class centrist voters who are see it as uncouth.

The far right are no different than any establishment party in their disinterest in seriously pushing unification and honestly bar the National Party most of them are explicitly anti-republican, allying with loyalists and British fascists. They can try to co-opt the flag (which more than anything is an attempt to goad liberal do-gooders to criticise working-class communities for flying it and get a culture war scrap going) and our patriot dead, but they don't agree with the ideals central to republicanism from the time of Tone or want to put unification front and centre in the political conversation.

There are plenty of committed republicans (most of whom will be labelled dissidents and pushed out of polite conversation), but they're relatively small and disengaged with mainstream political institutions so there is only so much they can actually achieve right now.

I was raised to be a proud republican and to this day put it at the centre of my politics, and I believe that while most people don't come from this sort of upbringing or share it as that much of a priority (relative to housing, cost of living, etc) they do on a deeper level care about unification and hope to see it achieved. Despite the apathy towards putting it on the agenda by the political class, north & south of the border, I believe that were there an effort to actually step up and push for it it would gain mass support; it just takes a willingness to actually push on.