The article looks fairly similar to the one Calla released a few weeks ago. That one didn’t say anything we didn’t know already. (I am only guessing it is very similar)
Calla have not come up with (as far as I know) any reasonable explanation for not mining Brzkov. They do have an argument for Veznice, Polna and Jamne, but I would like to see how they fair with Brzkov in court of law.