It is partially true, but not 100% accurate.
If a post or comment’s total payout at the end is 0.01, it does get rounded down to 0.
If a post is at 0.04 and close to 0.05, and a minnow’s vote is enough to push it over the edge to 0.5, then they will have added 0.01 to the total payout. So in this case, it ‘counts’.
Oh wow... Thank you so much for this @timcliff I understand now. Thank you