Hello depping, thanks for the post and clarification, I know that the subject is from 2019, but I found this post https://kb.vmware.com/s/article/88358, from 2022, which more or less is for the same thing as your post, and probably this still is valid.
Currently, I am dealing with some tasks to save some space in the vSAN cluster, and I wanted to use the policy "None - Standard cluster" for non-critical (pre-prod VMs).
I want to ask, why using this policy with RAID-1 in the stretched cluster is critical?
Considering that for RAID-1 minimum of 3 hosts are needed, or 3 FD, regardless of the number of the hosts in the cluster when the cluster is stretched always will have 3 FD, and the placement should be the First object on the Prefered FD, the second object on secondary FD and witness on the witness host or third FD, I don't believe that is possible the Component of the objects to be placed on the Witness host, because the witness host has very small capacity, I already set this storage on several VMs and the result is like above. I don't know maybe for some smaller VMs, witnesses, and objects can be swapped, but I think that can be very rare cases.
Best Regards.