Ah, but they never said they would implement rolling for stats.
This is not true ...
As you can see in
this (admitely quite old) article ... they did:
Ed: Can you roll for stats? How will that work?
Walgrave: You can! In the character creation, you can accept what’s there or you can use the point buy option, or you can roll for stats. We’re going to implement I think two or three different ways of doing it.