50 STEEM bounty for explaing basic Steem stuff to @the-resistance.

In response to the suggestion in this post : https://steemit.com/the-resistance/@the-resistance/grumpycat-weekly-report-thursday-05-april-2018

I have set a 50 STEEM bounty for the best explanations of the difference in term of brain-time cost, voting power cost and and results between flagging the wrong doers instead up-voting the non-wrong doers when only micro fraction are wrong does.

Bonus points if able to explain Grumpy-compliance in simpler terms and why it's not always possible to influence vote sellers behavior by flagging them directly.