In my opinion not being open about which data is ingested and trained on, and trying to make that a repeatable thing for a third party, is not worth being called "open". Glad they did that.
to be fair, this discussion has been had numerous times here and the industry has arrived on "open-weight" to describe the practice of releasing the post-training weights in an open manner but not releasing the data it was trained on.
That's what they call this and I think it's a pretty clear definition these days to people in the industry.
How, is the training data public?