I've never met a programmer that isn't replaceable. What I have found, are lots of organizations that suffer because they allow a tyrant to exploit the imposte

I've never met a programmer that isn't replaceable. What I have found, are lots of organizations that suffer because they allow a tyrant to exploit the imposter syndrome of those around them. What you have here is a shitty manager who is holding his company back and putting it at serious risk by not remedying a serious problem. It's exploitative, demoralizing, and entirely unnecessary. Get this guy some help before he dies. And fire your miscreant of a manager.