Oh God, please no. Not enough getting tons of recruiter spam, now I'd also get robots pestering me about considering an exciting opportunity in a new exciting startup about which they'd surely be glad to tell me if only I respond to their spam. And this would happen anytime I'd write something online that is tangentially related to some keyword they gave to the robot. Because if I asked a question about some Scala library, and your company uses Scala too, this means I'm a perfect match for you and surely would want to drop everything and come to work for you. Or at least it doesn't cost anything for a robot to try?
And the worst of all, if anything goes wrong - "sorry, our AI hiring system had a bug, we deployed an update. We apologize for the inconvenience".
You basically laid out what an HR-minded person would do with an AI (I want a faster horse), and yes it sucks.
Try to think of how the hiring could be improved in such way that HR becomes unnecessary. "One-click-apply" to any job you want, AI vets you in seconds and tells you yes/no/feedback. Many other good possibilities.
>"sorry, our AI hiring system had a bug, we deployed an update. We apologize for the inconvenience
LOL, are you trying to make a point for humans here? Ghosting candidates is the standard nowadays. In the example you make the candidate gets a response, at least.
And the worst of all, if anything goes wrong - "sorry, our AI hiring system had a bug, we deployed an update. We apologize for the inconvenience".