You are assuming that such tech is not already being (or has been) developed covertly by malicious actors. Developing this and making it open source brings more awareness about the subject and will make it easier to develop defense models against such bots (whether already in existence or that will be developed in future).

> You are assuming that such tech is not already being (or has been) developed covertly by malicious actors.

I fail to see where playing out the "but others are doing it too" card exempts the responsibility of those who either lower or eliminate the barrier to entry to these attacks.