I can’t quite figure their angle. I mean a big chunk of it is “stick it to them up in Dublin” and they get the gombeen voters out for that.
Also seeing as nobody would let them do any actual work in the Dáil, not that they would do it even if they were let, they can devote their time to constituency clinic work which achieves nothing but gets their first preference vote out.
And then there is the family as a group of people engaged in pure and simple graft and corruption which is a real driving force for them. That and taking any opportunity to appear in the media - particularly by saying the most outrageously stupid thing they can say. Which given the idea free zone which is their heads is usually pretty outrageous. This family regularly gets international attention for saying stupid things like drink driving is fine if you live in a rural area (they have pubs and Ireland’s relatively low road death rate - higher than the UK, lower than most of continental Europe and the US - is pretty solidly connected to drink driving not being socially acceptable),
Mostly it’s just trolling and attention gathering. He and his family have been “them up in Dublin” since the 90s. His father was an election manager for the largest party in Ireland in that region for decades. They wouldn’t further his ambition by putting him up for a seat (as he was nakedly a gombeen man and not anyone you’d actually want associated with you) so he ran as an independent and used his network to deliver the vote for himself. So obviously fairly astute in a rather limited, venal, corrupt, self-serving, ethically absent way.
But even when independents held the balance of power nobody would associate with him. Or his sons. At some point you feel the joke must wear thin on the people of Kerry, but given they elected any of the gobshites at all who can tell?