That said, all the possible IP in something like this is in security, reliability, scalability and good UX.
Severely doubt the OP spent much time on that.
The CEO is probably just having trouble dealing with stress and is acting out. It happens.
I agree it's not uncommon for first-time founders/CEOs to see phantom ghosts and lash out; however, we should be careful to not normalize that kind of behavior. Founders often hold mentorship or supervisory positions over their current and ex-employees, so it's harmful when they react with aggression and manipulation.
At small companies, that betrayal of trust cuts deeper than it does in more common manager-employee relationships, IMO.
That doesn't give them a free pass to lash out at people.
Now, the only reason to make the conversation public is to apply public pressure to make something happen.
It's also notable that Amjad used to work at CodeAcademy on up-and-going interactive coding experiences. Now he has his own company building up-and-going interactive coding experiences. What did Amjad learn while he was at CodeAcademy, being privy to internal business operations?