Needing two keys for a third one is not new. My 25 year old car needs two keys for adding the third, old Fiats has “red master” keys which are also required during adding keys.

Honda/Acura/Toyota have used similar systems for years; this is one of the reasons why cloning a key costs less flagged hours than making a new one for an owner that lost all of them : when you lose all of them you need to get the actual computer out and pair it with the ecm directly, when you clone them there is a ritual that can be done with the other keys+ the new one.

Man wish we could copy that key onto smartphone (Apple needs to add flipper zero's tech to iPhone) for easy keyless access.