...
The Active Mining situation will bump difficulty growth to the high side of the 15-20% range. We were looking at growth in the top of the 10-15% range until Friedcat's gen 3 hit the market but Active Mining's ~4 PH/s will bump it up in the mean time.
...
Active Mining will do no such thing. Active Mining is currently reselling HashFast boards, if Ken is to be taken at his word (which has always proved to be a mistake). Active Mining's contribution to the hashrate, again if we take Ken at his word, is going to be negligibly small.