I think it is ethically appropriate because he's taking a real thing that's happening and talking about it. It's giving him a topic to say about that might allow others to connect with or understand. Also depends on the topic
Pantomiming is the act of miming an object and using it. For example, if you're at an audition, and you see in the script you are supposed to talk on the phone, you would shape your hand as if you had a phone in it. It's like pretending the object is there and interacting with it.
I hope this Helps!
The lowest volume level that a person could detect