Don't take me wrong. I understand that they now get what they paid for. It's clear to everybody. It still FEELS bad and it looks bad. Can't do anything about it. That's what it is since you come to this world as a baby. If somebody takes something away from you, you cry.
It was the least bad option for Tesla at the time. Sure it may feel bad to you as a bystander but the other options would have felt worse to Tesla customers.
Not being able to produce and deliver promised 35k cars would have been a worse option. Doing so with the originally planned configurations would have been complex, disruptive, and possibly killed the company during a vulnerable time. Instead, customers are getting way better cars than originally planned (better seats, better roof, software-upgradable features).