On the objector Brian McDonagh, it appears he objected due to a case of sour grapes:
"The third High Court objector came from left field.
Brian McDonagh is one of three brothers who, in 2007, paid €22 million for land in Wicklow, funded by Ulster Bank. They applied for permission for “the world’s largest data centre”, using a company, Ecologic Data Centres.
A planning battle ensued that went all the way to the Supreme Court in 2013, where the McDonaghs defeated An Bórd Pleanála, which had refused permission. Some of the Apple objectors have pointed to the Wicklow site as a possible viable alternative.
McDonagh does not appear on the list of original objectors in Athenry. There is one objection recorded, however, from a Dr Yeok See Ooi, who gave an address in Ballymount, Dublin. Dr Ooi gave no reasons for the objection.
Companies office records show McDonagh has operated businesses from an address close to the one given by Dr Ooi. A trawl of High Court documents reveals Dr Ooi was, in fact, McDonagh’s girlfriend. She is an ophthalmologist based in Wicklow, and appears to share his Delgany home.
A woman who answered the phone at McDonagh’s Delgany address, which was on the market in 2004 for €5.5 million, said she would pass a message to him from The Irish Times. There has been no response to several further phone calls."