Well, I may not be very good at grasping what you're implying, but I think you're implying that the Rwanda policy is driving asylum seekers in the UK to escape to a civilised country that respects international law.
Maybe they're just realising how crap the UK is. And that Ireland is in the EU, so when they eventually become Irish citizens they can work anywhere in the EU.
Immigration to Ireland has long been higher (relative to the existing population) than in the UK. Last year's immigration was still less than the last high in 2007.
Ireland of course would have at least three times its present population without 300 years of mass emigration. (Twice as many Irish people have emigrated than live there now.)
And it makes a nonsense of "stop the boats" to stop trafficking if in effect Sunak wants to traffick people on to Ireland.