I don't buy the Wall Street Journal's supposition that some biohacking hobbyist is going to deploy a genetically engineered plague that is going to attack and destroy a significant portion of the population.
If it happens, it will be perpetrated and emanate from the elite's Brave New World (BNW) system, and presented to the public, through their propaganda machine, as having stemmed from a lone biohacker. In fact, perhaps this is exactly what the WSJ article is attempting to do - prepare the information terrain now for just such a future scenario.