Is that what cancel culture is? I certainly don't think that's what most folks are referring to when they discuss "cancel culture." Is what's being mentioned here the common act of terminating employees who go on racist rants or act out violently and go viral? The piece preempts the objection of employers protecting employees from hateful conduct (without taking a stab at how exactly one should balance those interests,) which makes me think that these terminated employees are at least a portion of what the author is discussing.
I share the author's skepticism for the utility "Right To Work" laws provide workers, but I don't understand how this relates to "cancel culture."