There's a reason western M/HREE (i.e. the strategic good stuff) strategy hedges on similar iconic clays finds like PRC, because that's the only working industrial chain that extracts M/HREEs at scale. It's why AU/Lynas focus on ionic clays and not US hardrock... which btw doesn't even pretend it will do anything meaningful for mineral security other than light REE.
US+co is trying to replicate PRC M/HREE industry, without the techstack that took PRC decades to build out, because US+co never developed these geologies in the first place. The relevant upstream extraction/mmidstream refining tech for kind of deposits was never pursued in the west.
Now west can move fast due to second mover advantage, but it's going to be slow going like PRC EUV. Until then it's going to require all sorts of parallel efforts like recycling, or materials engineering to reduce M/HREEs to mitigate gap.