The more things change, the more they stay the same.
Ecclesiastes 1:9
What has been will be again,
what has been done will be done again;
there is nothing new under the sun.
You are Correct...
The difference now is that the left needs the issue so they will do whatever is necessary to make it fit; even change the terms and definitions. This is why it isn't “Gore-Bull” Warming anymore but “Climate Change”. Anything fits that.
I had a customer (who turned out to be a whack job) tell me several years ago that “Global Warming” means that it will get colder in the midwest. People in the east and west have probably been fed the same like of bs.