The captain in question should address his concerns to the IAA. If they fail to deal with this in the appropriate manner, he should report this to the FAA, the UK CAA and other European aviation authorities.
If there is any evidence that FR (and/or other Irish carriers) are not receiving adequate regulatory oversight from the IAA, Ireland should be added to the list of countries whose aircraft are banned from entering EU and US airspace !! Ireland would then join the likes of Equatorial Guinea, the Gambia, Liberia, Sierra Leone and Cameroon.
FR has long outgrown Ireland (and it's tiny IAA). It is time that MOL registers FR in the UK, as STN is the airline's de facto base of operations.
I for one would love to see the UKCAA get their teeth in to MOL's @rse :-)
CG