Heya! I'm the product manager at Medium who manages the Boost Nomination Pilot. I just wanted to say, this isn't true.
I addressed this misconception in this story on the Medium Blog: https://blog.medium.com/boost-nomination-pilot-gossip-from-the-person-running-the-program-803bff156c94
I'm always happy to answer questions about this stuff -- feel free to leave any that you might have on any of my stories on the Medium Blog. This one might also be interesting for ya, if you haven't seen it: https://blog.medium.com/how-can-i-get-boosted-33e743431419