It's hard to prove but I have posted things and been told by other people that what I posted never popped up on their feed. In other instances what I posted didn't even make it to the comments streaming on MY screen. I have also heard people mention this on podcasts/discussion boards.

Definitely post the results, whatever they are. I would not be surprised if they save the propaganda tools for people with bigger viewership numbers though; but either way data is data.