As is playing out with this weather system, short bursts of extreme cold do not mean global warming is a myth. In fact, after decades of human-caused warming, "weather weirding" is playing out across the world. Don't dismiss climate change — it could even be contributing to extreme polar plunges like these.
It's easy to dismiss any extreme weather event as a consequence of climate change, but in reality, they're usually influenced by a myriad of factors that have nothing to do with it. More research is needed before we can establish any direct causal link between the two.
There is a 50% chance that the average global temperature in 2100 will be 2.37˚C higher than the average global temperature in 1880, according to the Metaculus prediction community.