Why is "Crucifix neck crank" trending?

Wikipedia Overview

In combat sports, a spinal lock is a multiple joint lock applied to the spinal column, which is performed by forcing the spine beyond its normal ranges of motion. This is typically done by bending or twisting the head or upper body into abnormal positions. Commonly, spinal locks might strain the spinal musculature or result in a mild spinal sprain, while a forcefully and/or suddenly applied spinal lock may cause severe ligament damage or damage to the vertebrae, and possibly result in serious spinal cord injury, stroke, or death. Spinal locks and cervical locks are forbidden in all gi competitions, IBJJF Brazilian jiu-jitsu competitions, amateur mixed martial arts (MMA), multiple forms of no Gi jiu-jitsu, judo, and other martial arts. However, professional MMA, some no gi Brazilian jiu-jitsu competitions and one gi & no gi promotion does permit spinal locks.