It does, there was a lot of debate on whether it should or not. If you have strong opinions one way or the other I would love to hear them as we are open to changing that behavior.
If you don't want that behavior, or just want to export part of your drive (or photos) collection you can expand that product in the Takeout UI and just select certain folders.
If you don't want that behavior, or just want to export part of your drive (or photos) collection you can expand that product in the Takeout UI and just select certain folders.