the downvote is sometimes used by whales to obliterate a minnows rep, by constantly down voting comments by the minnow, often on the minnows own post and comments which usually don't even have 1 cent! The only purpose of the flags is to destroy a minnow for revenge

Nothing is "destroyed" or "obliterate[d]". Reputation is a non-consensus calculation, which means it is purely a UI function and does not affect payouts, ability to post, or ability to vote.