Wall Street Journal, so take it with a grain of salt. They love blaming the rising dragon for all problems.
I personally find the wall street journal to be very reputable.
I do agree somewhat with their conclusion but I do not think the issue is limited to China. I think that since the cost of powering the miners has risen to such great amounts that people simply cannot afford to essentially be buying so much bitcoin via the electric company so they have to sell at least a portion of what they mine