It would be a huge selling point for Apple users that want a device which promotes privacy and that ties into the Home app.
The Logitech Circle View is a camera that was recently announced and it fully supports HKSV.
By supporting HKSV the camera gets facial
recognition, iCloud storage, as well as Apple TV integration. The only reason I can see for this not being implemented is to keep users tied into the Wyze app and subscriptions, which is fine I guess. But it would be awesome to be able to use this new camera (and the existing indoor cameras) with HomeKit.