All good points.
There s no denying that the stand is a good idea, looks well constructed, and the back connector looks great. But the M16 connector doesn't seem right yet as, as you say, even reverssed it doesn't seem long enough .
Actually, just taken a look at the site and in the add on options the connector is shown the other way up to how its installed in the demonstration image above.
See here. The first option:
https://www.coeros.com/product/the-b...display-stand/
But then when shown as part of the stand its shown the wrong way up again so who knows?