Ahh oki. I never watched all the videos entirely so I'm not aware of them saying that.
I just thought you may have been confused from the change in BG 1&2.
OK, found it. This is just a copy/pasta of text from a Reddit page, but yeah, they say that you should be able to roll:
They have stated that rolling stats and point buy are options
"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."
https://twinfinite.net/2020/02/baldurs-gate-3-interview/
