Is it possible to stop children filesystems from showing up on the sidebar and on the desktop of the Finder? I would like to see only the root pool, then the child datasets should be seen only inside the folder structure, where I mounted them.
Of course hiding mounted filesystems from the Finder preferences is not what I mean

I can see the usefulness of many datasets, for example they make the snapshotting much more flexible, but I don't want a huge list of drives in the Finder.
I am moving files from my main pool to the dataset I created. I would have liked the files to be moved without actual reading/writing, but it seems they are treated really like different disk drives: the moving is painfully slow.
As info, I used the following commands:
zpool create -o ashift=12 -O casesensitivity=insensitive myPool /dev/disk3
sudo zpool attach myPool GPTE_34B525B3-6497-49AC-B8C7-8F82A9FF7B3C /dev/disk1
sudo zfs create myPool/myDataset