I gave it a shot myself and, all be darned, you’re right - it doesn’t seem seem to work!
I’ve since reached out to our developers and they were able to confirm that defaults is a non-functioning argument for the create create_column field and was not intended to be publicly visible. Because of this, they’ll be hiding it in the coming days.
My apologies for any confusion or frustration related to this. Thank you so much for taking the time to bring this to our attention