Edit: It is not fitting to make light of the torture of human beings by applying the word rape to a mathematical algorithm which is the only problem that the reward pool currently has. The pool is not human. It is not feeling the things that humans feel during a rape.
There are many words that describe some people's concerns for the reward pool: Robbed, Plundered, and Pillaged would all work.
What I thought was obvious seems to be opaque. But only 2 have been brave enough to discuss it. I have brought my replies to them into the post to help others.
Second Edit: It has come to my attention that some are using definitions from the ancient greeks and medival Europe to justify the use of this word in modern days. I'm pretty confident, especially in todays' world, that it is much more appropriate to use words in context of the modern use.