There is a bias of perception between bad flags and good flags.

The good flags are very rarely talked about because people don't appreciate that some whale downvoting a bigger whale that upvote it's own content increase the reward of everyone else that deserve it more.

Two example from today, who cares really?, the whale who spend SP, who lost a curation opportunity and risk retaliation to flag this self-voting isn't getting any praise whatsoever for their good flag. :

https://steemit.com/politics/@joseph/transparent-wall-at-the-border-with-mexico#@mehmoodasultana/re-joseph-transparent-wall-at-the-border-with-mexico-20170716t040758669z

https://steemit.com/business/@bookingteam.com/what-you-need-to-know-in-the-vacation-rental-industry-07-16-2017