Not nearly that steep.
If you look closely, you'll see that the gear on his rack is hanging pretty much straight down, which means that the photo is true to the angle of the climb. The second half of the climb is definitely steeper than vertical.
Notice the backwards hat and contrasting colored shirt? That's style!
Got on this, today. It's not that steep. It's under vertical for the first half and then possibly a few degrees over vertical on the upper headwall. Great movement.