You don't find it misleading because you already know what an OTP Supervisor's role is limited to, and you know that Kubernetes (among a thousand other things)

You don't find it misleading because you already know what an OTP Supervisor's role is limited to, and you know that Kubernetes (among a thousand other things) also provides that one feature. But its not a good analogy since it can only be understood by someone who doesn't need it to be explained.