What killed my pine tree?

Just had my poor pine tree cut down today. Lucked out that I did because I was on the fence about it because it still had a decent amount of foliage and I had an arborist tell me it would be years before it completely died. The trunk from all the pictures is the right tree in the last photo.

When they were cutting it down, they barely had to cut into it before it cracked and they could pull it down with ropes. You can see how much of the center was rotted. Someone in another thread said they thought it was IPS engraver beetle, but the damage doesn’t look like the pictures I find online.

Is my maple, which is maybe 40-50 feet away from where this tree was, in any danger?