“Arctic sea ice is more exposed to solar heat, and more of it melts.”
On paper that sure looks good, put a heat lamp on an ice cube and it melts, making liquid water.
Now I am not saying their theory is wrong, and for sure I believe global warming is a hoax -
but,
I live in a very cold place. Typically on a cloudless day when the sun is at it’s absolute brightest, we have our coldest temps and nothing melts. We have that phenomenon called sun dogs.
Now on days with complete cloud cover, the temps warm up.
Those cold days are an anomaly; the warm ones are man-made climate change. Simple, isn’t it?