They are aiming this at anyone who might leak info to exJWs, which then gets broadcast on YouTube and Twitter and Reddit, etc. They're not just reminding the loyal membership to be on their guard, they are warning everyone not to leak embarrassing or incriminating info to 'opposers,' who are eager to use it to discredit the organization.
And, as with anything they try to teach, the lack of self-awareness is always present:
Although difficult to hear at first, a friend's honest comments are what will benefit us in the long run.
"But don't you even think of offering an honest comment to an elder or --heaven forbid!-- a GB member. Just keep telling us how awesome we are... or else."