I think Hanlon's Razor can be applied to this example: They just do not think that encryption is important.
It is real for Chinese companies.
"Little is known about the Ragentek firmware. BitSight researchers said code in the firmware goes out of its way to conceal the presence of the underlying binary file. For example, it deliberately attempts to remain excluded from the list of running processes returned by the Linux PS command."
http://arstechnica.com/security/2016/11/powerful-backdoorroo...