[m_eiman]

"careful analysis of DNA"

No need for careful analysis, just force the company to give you a list of registered users matching some criteria. Your kill list is just a SQL query away.

"makes no screwing possible that wasn’t already"

Sure, but it makes it easier and faster to select targets for your screwing.

[kjkjadksj]

Historically the people doing the screwing weren’t so concerned about precision. Imprecision lets you throw in political enemies who don’t fit the demographic you are directly targeting so its quite useful