Who is claiming an imminent ice age?
What is being claimed is an imminent, like starting today, Maunder-like minimum (aka, Eddy minimum, aka ManBearPig minimum) and lasting thru the next 75-150 years.
The next ice age is probably on schedule, to hit in about 10,000 years.
Two different animals.
They are claiming a Marauder Minimum. That cannot happen now. It must be much worse, simply due to the stupid ape factor. They have been attempting to cool this planet for decades. Add that into the stupid models and you might get a snowball Earth. The human component to warming was helping, but that little bit has been far out weighed by numerous stupid ape factors even worse than the actual intended cooling projects.