The warmists have already made numerous ‘data adjustments’ which changed historic data to prove global warming. If the climate gets colder, they’ll just do more ‘adjustments’, guaranteed. Doesn’t matter if glacial ice moves down over Canada and the northern states, they’ll pull out data to prove we’re in the middle of a heat wave.
The true believers of the global warming cult would deny there was an ice age even as it scraped New England into the Atlantic Ocean. They are mostly delusional and the ones that are not are cynically in it for the money.