# [Husk], <s>6</s> 4 bytes

*-2 bytes thanks to Razetime!*

 ETC2

[Try it online!][TIO-kocsv2qj]

[Husk]: https://github.com/barbuz/Husk
[TIO-kocsv2qj]: https://tio.run/##yygtzv7/3zXE2ej///9KJSUZGZlKAA "Husk – Try It Online"

Hooray for all ASCII solutions! Outputs a positive number if the input is doublespeak, otherwise zero.

~~~
 C2 Cut list into chunks of 2
 T Transpose
E Check if list has all the same elements (return length of list if so)
~~~