Are you serious right now? Global warming isn't just a moment in history, it's a process that has been happening over the years, with rising sea levels and land sinking in a lot of countries.
I guess you are just one of those people who fail to acknowledge it unless it's your own home slowly getting submerged under water.
Shame, it was flagged and removed. It was a comment that was highly sarcastic and critical of climate change, but I'd say no more sarcastic than any other comment we might find on here. Perhaps we could have benefited from learning why people continue to falsely believe climate change isn't real.
"Booo it's the ghost of global warming! Always threatening, never happening." is a worthless pointless comment and there's not going to be any useful discussion coming from it.
It's exactly the kind of comment that needs to be downvoted and flagged.
Also, flagging doesn't really remove anything. You can change the "showdead" setting in your options to see all flagged comments.