It’s a little premature to say this liberal lie (redundant, I know) is dead, especially as the clueless a$$ clown and his merry band of communists continue down the path of “cap and tax” and other punitive legislation designed to alleviate this nonexistent “problem”.
The truth or untruth of global warming is irrelevant to the Left. What is important is mythic power of global warming to manipulate people and accumulate power.
And the Left is not ready to give that up yet.