Enemy adopt sp_ "improvements" and release his miner that is faster than sp_ slow miner with all those "improvements".
Nice logic. 

For a person with normal logic it is evident that sp_ can't compete with z-enemy/t-rex miners and he make his "improvements" based on what z/t already implemented. That's why this miner is not sold as others - noone will by slow miner. That's why in this case sp_ decided to be a "knight in white clothes" and release slow but opensource miner. 

P.S. But anyway - it is good work from some point of view.