I was quite pissed off when I found this out myself. Being a Model S owner got you into the referral program. With a FbR Model X at 10 referrals you have to take that deal. To use my $17K in referral credit I found buying a Model S was the only way to get rid of the credit without reselling shenanigans. Now I will have three Teslas for our two drivers. Kinda maniacal of Tesla since they sold two additional cars to me and made profit on both!
I was the one that elevated the issue to Ian who is the N. American Program Manager. In a heated and long conversation, he would not budge. Silly to design a program that requires shenanigans like selling stuff you buy to take advantage of it. Poorly thought out in my opinion if your best participants have no straight forward way to get their prizes.