So basically there is ZERO CORRELATION between difficulty and price. Quite at odds with the exclamations to the contrary.
zero correlation is simply incorrect. sample size is simply too small for it to match up on the last leg from april onward, give it time
Of the relationship difficulty has with price, it will certainly not rise and fall like the price.(thats the only reason i can think of as to why youd compare the two graphs)
Even if you think the difficulty increase will drop their profits, that was to be expected even if things didnt pan out as expected for them personally. Even in the worst case profit wise, they should still be able to run them for less then the cost of power use, even if it takes years to pay off. Difficulty wont be dropping.