I guess I’m old fashioned. I wouldn’t call them taking the firewood sized logs theft in that case because they were left there to be picked up and hauled off by the city. But, the people who took them did not know that for certain. They assumed that they were “free for the taking” only because they were at the curb.
They did not know for certain that those logs had not been purchased by someone who was coming to pick them up later. The pile did not have a sign or anything that indicated “Free” on it.
Again, old fashioned, but I wouldn’t get anything out of someone else’s yard unless I knew for certain it was free and there for anyone to take.
Now my wife, If she sees something by the curb on trash day, she will get it if she thinks it’s useful. That’s on trash day, by the trash can.