Some important details are missing. And your guy there is avoiding direct answers.
When placing an order for a car, there is a few steps.
One contact the dealer about a car, perhaps just to get on a list, or with an actual build like a Porsche Code.
The dealer takes it, but that doesn't mean that order is in the official Porsche system. No orders are official until it is entered into the computer, and the very first step is 'Demand Order'. They aren't actual build slots. It's just a pool of demands that Porsche sees before assigning allocations. All dealers are suppose to enter all orders into the system as demand orders, and not just keep an off site 'wait list', dealers don't do that cause once it's in the system, they cannot fudge anything anymore without being noticed by Porsche, like moving a potential buyer up or down the order list.
A Demand Order can turned into an actual Sales Order if an allocation is assigned to that particular demand. Doesn't mean all demands will be filled however.
The Demand Order, however, already have a customer name attached to it. Porsche CAN SEE who the order is for even if just a demand. And the Demand Order will already be showing up on a customer's Porsche account and the Porsche phone app. This is the new system now. My Dakar is getting built next month, and my app is showing a different screen now, but after I 'placed' my order with my dealer, I already got an email notification and an app notification that Porsche has noted my interest and waiting for an allocation to be assigned. I got another update and status change when an allocation is assigned to my order. Now it has switched to scheduled for production.
Yes, Porsche can see in the system when a car is ordered, built, shipped, arrived at dealer and when it is being registered and to whom, but that means absolutely nothing.
If a car is ordered with bogus information, when asked, the dealer can always say oh the buyer is away, the buyers requires more time, the buyer this the buyer that. That car isn't 'ordered' for the showroom, it is a 'sold' order to a client that hasn't taken delivery yet, but who is also an imaginary entity. This is especially easy for the West Coast, where we have A LOT of mainland Chinese buyers, and at times they are stuck in China and can't get back for months at a time. So saying the buyer is away and can't take delivery is a very VALID excuse. Porsche is used to that.
He isn't wrong is saying future GT allocations are based on previous sales records, the more a dealer can sell the more they are able to get more. It's like government budgets, if a department can't spend all the money budgeted, they are getting less the year after.
We're not required to presell cars and it's not a problem to determine the buyer after the cars arrives.
This last sentence. Of course they aren't required to presell cars, every GT car allocation on every dealer have a wait list, they literally sells themselves. Like I said, all GT cars are sold orders, a customer name has to be attached to that order, unlike say Macans and Panameras or regular 911s where dealers can order stock cars.
I have been dealing with Porsche dealers for 20 years, I have a very good relationship with the GMs (well I think they fear me more than anything cause they know if they cross me I am complaining directly to Germany) and they are very frank with how the process work from the beginning to the end. Also helps that I have a relationship with Zuffenhausen and gets to talk to to them about the whole process. And I know a few dealer principals from the 918 connection and see it from their perspective.
--
I understand you want the wing. Specially around those roundabouts outside your town 
100 % what the dealer in my region told me last week on the allocation of a dakar: Taycan + „whatever limited model“. By the way, some folks participating in the Porsche Club Cup in Germany told me, for what is worth, since they do not get an allocation anyway, they simply keep there 991 GT3 RS just for practicality…the frunk…
