Our feeling so far has been no, although this could change, especially with substantive feedback on the topic.
For those who want the desktop hidden all the time, it’s easy enough to rely on a workflow involving “render between cues” plus running a cue at the beginning of the day, before the audience enters, etc.
“Render all the time” could be very confusing to someone who doesn’t know that it’s switched on, and if macOS becomes confused about which display is which, a thing that absolutely does happen, it could create a situation where the operator’s display is hidden and cannot be un-hidden. Messy.
For those who want true broadcast-level absolute control over displays, Blackmagic and NDI output is probably the best answer.
Best