I have seen practically no discussion of it in mainstream media, it slipped under the radar with the only comment being that this was another sign of us being more progressive, after the huge success and national pride in the gay marriage referendum.
I think most people think of transgender as being like Lydia Foy which is patently not the case for most of the transactivists today. In fact, for transexuals who have been through the gamit of treatment, it must be pretty galling to see all the support for those who just want to wear dresses and high heels 
There are a few discussions online, for example politics.ie but I've only once had a conversation in real life about it, and basically no-one believed me when I pointed out the problems for sport and for refuges (as well as issues in hospitals). I was just told I was being ridiculous - discussing sport I was told "that wouldn't happen". I know people were looking at me and thinking I was a bigot.
The trans issue is still considered by everyone I know to be supporting an oppressed minority, and and of course the universities have jumped on that bandwagon. I've attempted to talk to my children about it. ds thinks it's a load of attention seeking rubbish, but dd appears to be more brainwashed (though I'm chipping away). dh now believes me, purely because I keep sending him sport related links; sport has been the only way I can convince him that transwomen are actually harming women.
It also appears that our Labour party are on board. The LabourYouth Women's Officer is now a Women and Trans Officer (which I suppose is still accepting that there is a difference).