Good article in Irish Times: Nine questions would-be Presidents should answer
As it explains, a lot of the people proposing themselves to County Councils either misunderstand the office and its (lack of) powers or they intend to ignore the Constitution. They are also make pledges about campaigns of various kinds that they’d run while in office (reach out to the diaspora, raise suicide awareness etc.) for which they have no sources of funds.
In fairness, it’s quite a hard office to campaign for: you can’t really promise to do that much but there’s not much you can do. But the current wannabes are helping to distort the public perception of the office and its powers but bringing up migration and social justice issues.