Agreed, it's even more irritating that the very first bullet point is grammatically wrong as well, further highlighting how poorly this whole "guide" has been communicated itself:
> You can not not communicate.
It's "cannot not".
> You can not not communicate.
It's "cannot not".
“Both cannot and can not are perfectly fine, but cannot is far more common” [1]
[1] https://www.merriam-webster.com/grammar/cannot-vs-can-not-is...