Old growth forest contain a large number of old trees.
The older things get, the greater the liklihood of death.
So if these trees all got their start long ago, we could be seeing the upper limit of tree longevity.
The greens see Old Growth Forests as sacred, but I don’t think they are immortal.
But we aren’t talking about them dying naturally, we’re talking about cutting them down. Longevity is therefore not a factor.
Besides who cares? I’ll be dead long before this becomes a real big problem, and future generations will get used to no trees just like we’ve gotten used to no buffalos running around the neighborhood.