If I were to guess, money. Good scratch to be made selling these tools, or even just working for a contractor and never be found making the tools themselves - just a one-off sell of information on how to build a device like these.

But yeah, morals are flexible, a lot of people don't care what their work is used for (whether they're directly aware or not). I mean personally I've worked for investment banking and the tobacco industry (websites/shops for e-smoking products), I've heard of others that have worked for gambling or "adult entertainment", and how many of you here work on either crypto or Amazon?

What's morally right, wrong and justifiable is flexible, is all I'm saying.