If I may, I think the thing to understand is that the board has had updates on the long-term vision and plan, including various elements as they've been developed. It may not have formally approved it, nor has it said, “Hold on a second, this is a major problem we have with a, b or c.” If concerns have arisen, they've been taken into account, as far as I've seen.
On April 30th, 2019. See this statement in context.