The obsession with transatlantic flights from Cork is due to the fact that Cork city & county with about 500,000 and growing rapidly due to immigration is the second largest population centre in the Republic of Ireland. It is denied scheduled flights to the US (Ireland's largest trading partner) due to politics.
The EU will thankfully resolve this anachronism when they agree the Open skies deal with the US next year. It is about the economy and particularly US investment in the region. To get to/from Cork to the US, travellers must fly via hubs such as Dublin, Heathrow or Amsterdam.
When Open skies is agreed, airlines will announce scheduled transatlantic services into Cork within a matter of weeks.