Thanks for the reply. Maybe I don't get the terminology yet. What exactly is the short shelf. If I go to YouTube >> Home and scroll down I see Shorts Beta. Those images are not autoplaying.
Once I click on one of them then it starts with autoplays.
Furthermore I added a shorts section to my YouTube channel, which I'm told shows what my shorts will look like on the shorts shelf. I can change the thumbnail for the video and it changes the thumbnail on the static pre-autoplay image that shows up in the shorts section. In an incognito browser window I went to YouTube, searched my YouTube page. In the shorts section the image is the custom thumbnail that I made and selected.
This is exactly what I understood was not supposed to happen from channels like vidIQ etc.
Do I understand things correctly?
Could this be an upgrade in YouTube.
Again thanks for your time.
I'm I have actually discovered something or at least helped other people that are/were confused the same way that I was maybe I have contributed at least a small bit to the community.