When true climate believers start offing themselves en masse because they can’t bear the guilt of knowing that they are killing the planet anymore, then I will believe it is serious.
That is funny...
When they stop living in mansions, riding about in chauffeur driven limousines, jetting about to global conferences (when they could be tele-commuting), and cease publishing on paper (strictly going electronic), I might start considering that they think that human activity has any impact on the outcome.
Kill themselves? Pshaw, that's for the commoners.