I guess I sort of agree with this, but you just "knew" virtually every mainstream OS, database, and web server into "unethically unsafe", and if you believe that: are you going to stop using them right now? Keeping up with the competition isn't a license to surrender your ethics.
I'm just saying it's complicated, and part of that is because we don't really have a good grip on the problem.
It's unethical if there are any safer, viable alternatives. In systems programming, there is little reason not to use Ada for instance (hopefully Rust soon).
Finally, classifying the creation of something as unethical doesn't necessarily entail its use is unethical. An unethically developed cure for cancer would certainly be widely prescribed and used, despite the long history of medical ethics.
I'm just saying it's complicated, and part of that is because we don't really have a good grip on the problem.