I thought there was a feature that I forgot! And I did try to confirm this at www.sketchup.com yesterday when I originally posted, but I experienced problems on the site and couldn’t get to the feature comparison, so I relied on my memory.
If there is a separate subscription based price only for the “XR Headset Viewing …” than my cost/benefit calculation could be updated. I don’t recall seeing any discussion on this forum on that, nor does it interest me enough to look!