Not the parent, but true in a sense. Communication is the act of conveying information from one person's consciousness to another. In the usual encrypted chat scenario, that path is unencrypted at two points (plaintext input, and plaintext output at the far end).

It is entirely possible though to have a true end-to-end encrypted channel if both parties are able to do the encryption in their heads without the plain text message ever being visible. A trivial practical example would be a single bit message with a single bit one time pad (agree ahead of time that if I say yes on the phone, it means no and vice versa).

The ends aren't secure.