My own 2 cents - I am Irish, living in Ireland.
Self ID did slip in the back door, on the coat tails of the Marriage Equality referendum results, and there was no debate or discussion of it - I missed it completely, and I would consider myself reasonably well informed.
Even if it had been an issue, absolutely no feminists would have been involved in questioning or even debating the issues because at the time they were working hard on the longer game (for Irish women) - that of abortion rights. I wonder if we will look back and wonder if we sacrificed too much for the sake of repealing the 8th? Heresy to say that out loud I realise, time will tell I guess.
In any case, Irish feminists, publicly are very liberal (to the point that the Abortion Right Campaign twitter account recently called the women who protested at Pride 'Terfs' - I am ashamed to say. 
They should know better than to be so abusive to their fellow women.
So it seems to me like mainstream Irish feminists have drunk the Kool Aid.
But it is also possible that because of cultural differences and because of the much smaller numbers involved, Ireland won't see the kinds of tense issues that the UK is experiencing at the moment (and our legislation is different to the proposed UK GRA from what I understand). Being a smaller country sometimes has its advantages, and we may avoid some of the direct conflict that I read about in the UK regarding prisons, health services etc. But I think schools and the 'handling' of Trans students will be a flash point. The number of young people who say they are Trans is growing suddenly, though I doubt we have official statistics.
(I am on a much smaller 'mothers' discussion forum in Ireland, and there is already support for the notion that it is OK for schools to withhold information from parents about students who speak to a school counselor. There is a belief, imo, that the family is dangerous and that professionals/ experts know better. I would not be surprised to see support for schools withholding information about Trans students identifying as the other gender from their parents. I would love to know what Irish teachers think.
I don't think there are any WPUK type groups in Ireland - if they exist they are staying well-hidden.
On a positive note, I saw that despite complaints from TRAs, the proposed abortion legislation (so far) uses the word 'woman' and not 'pregnant person' as some were hoping. I really hope that remains the case.
But I am 'just a mum' and am outside the academic loop of mainstream Irish feminism and politics.