BITMAIN Equipment won't stop hashing. They have ASICBOOST built into its hardware, but only the units that BITMAIN is operating have the corresponding software for ASICBOOST to work.
This means that all of BITMAIN's farms/mines will lose the 30% advantage. However, they still own massive amounts of hashpower.
Consumer units shouldn't be affected.
only bitmain has the software? pfft
if you keep pulling your own leg like that... only you will be the one walking with a limp