Why don't you just try following the news for the last few years and not just the right-wing echo chamber? Try not to be such an ornery old codger too: it's an easy enough search to find your answer, but I think you were trying to make a statement rather than ask an innocent question and truly learn something new.
msnb and cnn had a article on cop28, cnn's was february 2024, msnbc's was december 2023, neither had anything about cop29. In fact there were maybe 4 articles in 3 years that used that acronym cop(year). cbs news had one article on cop29 just this month. So the news the last few years on the non wight wing echo chambers, seems dry on using any acronym.
When you go out to buy, don't show your silver.