There seems to be an implicit idea here that being a persuader is a bad thing.
But even the informer is persuading people of something.
After all, to communicate at all, you MUST induce some sort of state transition in the recipient’s brain.
And both the informers and the persuaders in your presentation are attempting to induce such a state transition; they differ only in what state they’re attempting to induce, who they’re trying to induce it in, or how effective they’re willing to be at inducing that transition.
If the informer is uncertain and wishes to convey that uncertainty, great! Then they should use every available persuasive tool to persuade people to be uncertain! (As opposed to half-heartedly persuading them to be certain.)
However, if they are NOT uncertain, but are instead just trying to be “fair” or “evenhanded”, then they’re wasting their time on status-signalling.
Of course, it doesn’t feel like status signaling, it just feels like it would be “unfair” of them to “trick” people into agreeing… because people should just “rationally” end up agreeing with them, not be persuaded.
In other words, the problem is viewing persuasion as evil from the outset… which then leads to conscientious (i.e. low-status!) people bending over backwards not to do it.
Thus, only high-status people end up persuading. And those who persuade, end up high-status. I expect that this isn’t a coincidence: persuasion works better from high-status to low-status, and low status probably inhibits persuasive ability (under the guise of being “fair” or “not manipulative”). In order to become more effective at persuasion, I had to de-inhibit myself from assuming status in places where I didn’t previously have it.
So, my suggestion: if you’re in the least bit worried about whether you should use every possible tool of persuasion at your disposal… don’t. It’s merely an indication that you haven’t updated your self-perception of status!
(Mind you, it’s best to go the opposite way when taking information IN… because high status also inhibits the intake of contrary information.)