SilverScum, you keep self-flagellating yourself: it might help you one day.
For others who are interested: from the Gold Coast Airport website;
www.goldcoastairport.com.au
"Gold Coast Airport at Coolangatta is Australia's fastest growing airport and is the 7th busiest airport in Australia. Gold Coast Airport was previously named "Coolangatta Airport" which is an Aboriginal word meaning 'Place of Good View' ".
and,
"Throughout this time, the Commonwealth Government owned and operated the airport. On the 1st January 1988 ownership was taken over by The Federal Airport's Corporation, a but Government business enterprise. Government policy changes saw the airport privatized on 29 May 1998 with Queensland Airports Limited (QAL) being the successful tenderer and taking the role of Airport Leasing Company. In 1999, QAL changed the company name to Gold Coast Airport Pty Ltd (GCAPL)."
So nine years later and Qantas staff are still calling it Coolangatta airport.
No doubt VERY confusing for tourists.
Check the Jepp charts and you won't find it called Coolangatta Airport anymore nor will it say to call "Coolie TWR". You call them "Gold Coast TWR/GND"
PEK is not called Peking airport anymore and neither is BOM called Bombay. SGN airport stopped calling itself Saigon in 1975 but your ticket will give the IATA code as SGN. It will however, spell 'Ho Chi Minh'.
I would expect there would be some consternation, and a diplomatic fracas, if QF announced on the PA that they had just landed in Saigon.
If you are providing factual, apparently useful, safety information (especially to tourists who have never heard of Coolangatta) on the PA, at least be correct.