I think it is to cover up any mistakes made, If it starts to cool down, which many are predicting... then that would explain it.
Climate Change to me means yes climate does change, but not as much as the msm exaggerates it.
Climate has changed for centuries, from the ice age to the dust bowl, and so on... and always will.
The climate change you are talking about is a hoax, in case it starts cooling this time, there is something to fall back on.
As in the 70's it cooled and an ice age was predicted, but didn't happen at that time nor after, but it very well easily could... Note, in the 70's when GC was the big chip, when the ice age didn't happen, there was no "Climate Change" to fall back on, so that is why the word was created.