"So pretty much seems as though @steemcleaners is arbitrarily dropping flags on us minnows but turning a blind eye to those with larger sums invested....I'm pretty sure that's called corruption....just saying..."

That's not the case. Steemcleaners doesn't have unlimited SP, they really cant do anything to a large account. Flagging is based on steem power and if you only have a drop in the bucket compared to the person you are flagging it isn't worth it. I would rather use that voting power to remove rewards from 20 smaller plagiarists than use the same amount to remove 1/5th of a whale accounts payout.