This was my first thought as well. However imagine someone posted a video of something horrific - a snuff video or child abuse or something. Should there really be a cost associated with flagging that? Is Steemit so inherently a-moral that it wouldn’t put these activities on the same level as any old post or comment you don’t care for, if we made them all cost the same to downvote? I’m still very new here, so I’m not really sure how it all works. It seems like there are lots of people who haven’t been here a long time and know all the lingo and games, but for newbs it’s not really obvious at all.