The thing you made up sure seems odd yes! The facts are that it is not currently used in any other vehicle and we can assume by the fact that the contract was written down by 99% that there is no plan to do so in the near term, otherwise they'd actually, you know, need the batteries.
But don't let facts get in the way of some good bullshit!
I get it, but if the supplier shutting it down suggests that its not being used anywhere else.
So besides speculation, where is the evidence. In particular I'm wondering about production within Tesla, another supplier, anything that suggests there is a model adopting them.