The brine method creates far less pollution than Hard Rock too as most of the Brine extraction can be run off renewable power, like solar.
And isnt that the whole point?
Plus Brine is still cheaper, dominating the lowest cost quartile.
I think its prudent to park your investment somewhere that offers the best of both worlds, with production timed to conincide with the bell curve that is EV adoption.
Now one just needs to find a company with world class projects 100% owned in both Brine and Hard Rock, with plenty of cash in the bank to bring it all to life...
Where would one find a company like that? Hmm...