Mid air poop pick up?

Over vacation, I ran into a woman with a very well trained small dog. I saw them on a walk one day and as I was watching them…the dog squatted and the woman got a poop bag quickly and held it open (on both sides) under the dog…so it pooped into the bag instead of the grass.

Interesting. I have always (like many people) let the dog poop on the ground and then picked it up. They do it this way so the poop never touches the ground. Are others doing this? I was impressed but also felt it was weird. I can’t stop thinking about it.