The British Isles is a contentious term that is used by the British, not the Irish, to describe the Islands.
You stated "the UK is the last outpost of the west of Europe" and "the UK has the geographic disadvantages of being an island and the furthest you can go west".
Firstly, the UK is not an island. Secondly, the discussion is about migrants/refugees arriving in the UK, not in these islands. If it was about them arriving in these islands, then it would be considerably more complex as the Dublin Rules apply to Ireland but don't apply to the UK. There are also different governments dealing with the issues and different laws in each jurisdiction.
As I said, can we retrun tot he subject of the thread rather than insist of centering anyine ekses politics?
To be honest anyone who feels the need to tytpoe that out, on a UK/British Isles focussed board might want to check why?
I am a fully functioning adult of a certain age. I am fully aware that we are ' a collection of islands' and that many areas have devolved governments and even that part of the British Isles are not in the UK. However on many threads, like many people, I will use "the UK" as a loose approximation of here, not the European mainland etc. And, to be honest, I couldn't care if some do find it offensive, I am British. I can't help it if you find that offensive.
We are an island nation, we are as far West as is possible to go before the big watery gap. That obviously includes both parts of the island of Ireland. Like it, lump it. I am not bothered!