I too was surprised by this revelation. I am also torn on this news. It's not unherad of for BLM to withdraw it's approval: https://www.demingheadlight.com/story/news/2021/01/14/blm-plans-withdraw-approval-dolomite-mine-operation-floridas/4166690001/
But I think since Li is an essential element of the green EV revolution, we have a big advantage.
Needless to say, I will feel much better once we have secured a SP and have all final permits.