https://postimages.org/
Well damn they said the same thing forty years ago...
I’m just an old fart... what would I know.
Times change. Sometimes what is not efficient/practical at one place and point in time, often because there is a more abundant and easily extracted substance available, may become practical later, when the costs of the once abundant substance make it prohibitatively expensive, creating an opening for the formerly impractical product to fill.
I remember that too. They were test growing here where I live.