I don't think it's preachy at all to say "Hey, the work you do has impacts on the wider world"
who are we to hold others accountable for their actions when money is at stake?
Potentially the ones affected by the actions of those receiving the money?
If you live in the woods alone and don’t interact with society.
You should write a book about how a society composed entirely of pure-bred mercenaries outlasted all other competing civilizations on the planet. I'd be very interested in reading it.