I think this is the Pixie Dust talking here.

You bought an asset for $16,000. You (hypothetically) sell it for $12,000. That is a $4,000 loss. The fact that you received a benefit from this asset while you owned it is irrelevant.
It really comes down to how people are defining a "loss". If its strictly a dollar's out/dollars back in, then yes, anytime we spend money, we are at an immediate loss from the start.
But, in this case, the person spent $16,000 and after 7 years, got $12,000 of it back--so for 7 years, they paid $4000 for vacations. Wouldn't classify it as a loss--wouldn't classify the $12,000 return as a profit either...
Personally, I don't see
DVC as a true gain/loss situation because its not an investment. It's simply a way to pre-purchase vacation.
IMO, the mistake that some make in considering DVC a monetary asset that will have a liquidation factor down the road. While we currently have a market for it, the true benefit in owning DVC is the value it provides you in terms of vacation and there is no way to account for that on a balance sheet...but I don't think it should be considered irrelevant, because that is really the return that one is expected to get from DVC.
When we bought, we assumed a resale value of $0. We then figured out how many years, assuming we would be getting a typical Disney discount, it would take us to "break" even...once we knew that, we could then decide whether we saw ourselves wanting to continue with our Disney trips beyond that point...it was a yes, so we bought.
If I was to look at this from a monetary loss, it would be having to sell before I hit the break even point--when I would have spent more owning DVC then I would have to remained a cash guest.
As someone previously mentioned, there is simply no one right or wrong way to look at all of this but new buyers need to go in with eyes wide open as to what they are and are not buying and what to expect down the road.
Anyone who needs to have a product with a resale value should really not buy a timeshare, DVC included.