Broadly I'd agree with you, but with Turkish, Emirates, Etihad and Qatar having flights from Dublin and great onward connections, the question is what can the niche be.
There aren't really any routes that can sustain themselves on point to point alone.
At least Amman has access to the Royal Jordanian network, but I still struggle to see viability.
There is probably demand between Ireland and India, but not necessarily to any individual airport in India, so who do they partner with there?