That's an impressive picture, but the 'lumberjacks' that I've seen lately by our cabin in WI are two guys with a giant robot-like machine that grabs onto the tree, cuts all of the branches off, cuts it into separate sections from the top down, and stacks them for the trucks to come and pick them up.

I don't know what their rate of clear-cutting is, but they seem to clear out about a city block size in a week.

Something like: https://www.youtube.com/watch?v=YzaXMzYFtSM

except the ones I've seen don't walk.

So I would expect the numbers to get better going forward.