I guess that explains it, thank you for responding, and sorry about the off-topic nonsense from the other user. To maybe try and explain, as I said earlier ant

I guess that explains it, thank you for responding, and sorry about the off-topic nonsense from the other user. To maybe try and explain, as I said earlier anthropomorphization is a pretty common writing tool, which means to treat a non-person being or object as though it were a person in limited contexts. In this case the glacier is being anthropomorphized to help describe its behavior, otherwise, sure, the use of steal wouldn't really make sense. Does that help you understand it at all?