Why would you think this? Grave prophecies of doom have failed to come to pass for nearly half a century now and the climate change tale is _gaining_ momentum.
https://arstechnica.com/science/2012/12/ipccs-climate-projec...
The problem is that since the late 1970s some very wealthy companies realized that this was happening and started spending money to try to muddy the scientific consensus and discourage action. Losing decades means that anything we do now is going to be harder since we’re starting much further behind.
I'm not saying that climate change isn't responsible. I do believe that it has increased the severity of the situation, and that is a big problem. But this is not a doomsday scenario. It's a once every 20 years going back as long as we can measure scenario.
I think your reaction is a perfect example of what the parent comment is talking about.