One vote farm is too many. Steemit and the other platforms are supposed to be POB products. Not money trees for scammers.
Utopian votes itself too with delegated stake are you saying that is wrong?
The reward pool empties every day when posts are paid out. So you are right no rewards stay in that pool. It matters not what @steemflagrewards does. They are small compared to steemcleaners.

Did you know that some vote farms have over 20000 steemit faucet delegation accounts and have made over 100,000 USD dollars in one year?

https://steemit.com/steemit/@naturicia/35-000-usd-with-over-8-000-bots-or-steemit-analysis-of-dart-or-comment-by-naturicia-or-english

https://steemit.com/steemit/@naturicia/4-months-about-2-600-accounts-and-nearly-1-000-sbd-or-a-steemit-analysis-of-tard-or-comment-by-naturicia-or-english