> Now, forgive me for being somewhat dense here, but are they saying that their business relies on
> hiding information from a legitimately granted and served search warrant?
No, they are saying their business relies on complying with the laws where the servers are based.
If the court had gone though the "normal" channels as outlined in the article, they would have basicly asked the Irish legal system to obtain this data, and therefore would have complied with the local and normal international law.
The judge is basicily saying "the server is in Ireland, you are US based, you own the servers via a subsidiary, therefore laws in Ireland don't apply to this data in Ireland".