You’re right - diffusion of responsibility and technological layering / obfuscation is a great way to avoid making anybody feel bad about doing something bad. It’s quite possible that this was done in a clever way that avoided anyone implementing anything they felt bad about. But ultimately, you can’t “just doing my job” or “i didn’t know it would be used that way” your way out of the harm your job does - it’s your responsibility to notice and act, preferably proactively, but there’s always retroactively.