This snow will eventually melt away. In a major ice advance it won't, and then it will build up.
We are going into a major ice age cycle. Lucky for us, the land is still depressed from the last one, so the ice won't build up. But in 5000 years we won't be so lucky. :) Then we will just go underground.
ps. and cbc is doing a major thing on the climate crisis. Bet they won't go here. Everything they mentioned is 5 years old.