"Don't anthropomorphize the founder, they're just responding to market pressures" is not the defense that you think it is. For the same reason you don't want to do business with Oracle (see the great rant from which I borrowed this phrasing [1]) you don't want to do business with someone who will advertise their product for unethical use cases - they'll cross other ethical boundaries too involving screwing you over.
[1] https://www.youtube.com/watch?v=-zRN7XLCRhc&t=1981s