The language was posted a couple pages ago. It doesn't say that you can't try to spec rent, just that they do not have to allow you to.
“No owner may directly rent, exchange or otherwise use his or her Ownership Interest without making a prior reservation of an available Vacation Home…on a first come, first served basis. DVD’s approval of a rental by an owner is not required after a reservation has been made in the renter’s own name. However, Ownership interests should not be purchased with any expectation that Vacation Homes may be reserved and rented to third parties"
So you can't just rent points and "send" them to someone to use, you have to make an actual reservation for the renters according to normal rules.
Then it importantly says that DVCs approval of a rental is not needed once the reservation is made in the renters name.
A normal rental will have the renters name on it from the first booking, and once that renters name is on it, then
DVC does not need to approve that rental, it is blanket approved (unless a different rule was found to be broken)
A spec rental will have the members name on the reservation, and only later will they change the guest names. If approval of a rental is said to
not be required
after the reservation is in the members name, then it holds that approval may be required before or until the reservation is in the renters name. Since you can't change the lead guest yourself, it member services doesn't want to do it, then you are free to cancel and rebook something for your renter