OK, so I have slept on this for 30 minutes and have fully formed opinions and reasons.
Big Brother is a zero sum game, not a real world business setting where you form partnerships with vendors, distributors, etc to benefit everyone towards higher profitability or market share. The victim hood mentality is premised on external factors hurting or aligning against the victim. In a zero sum situation where there is a winner and 15 "losers" there are 15 external factors attempting to victimize you. Everyone is fully aware that all 16 people are walking into the house with the goal of winning (I won't derail by discussing fame w h o r e s). Kimmie, for instance, had 15 barriers to reach her goal, and instead of embracing that and deciding how to manage those barriers, she alienated the person who could banish her. She willingly and vocally stated she would not campaign or talk to Michie to try and influence his decision. It was discussed at length in the episode when it happened.
Obviously Michie was blindsided on finale night, but who is to say he didn't feel "discriminated" against by Kimmie, who went out of her way to avoid white males during her time in the house. It seems obvious to me that the mindset of the person is the only difference. One person decided that the communication barrier was a victimization, while the other person saw it as a barrier to their goal and removed that barrier. I hope it is clear I am not calling Kimmie racist, I am just saying it is easy to search for ulterior motives in everyone's actions, and if you choose to fixate on something, it is not hard to make that something a reality, even if only in your own mind.
Point being, when you walk in the house, you have 15 moving parts, and the only information you have is all those moving parts are focused on the same goal. It is up to you to determine how to get those parts to work for you, how to make your short term goals, their short term goals. Everyone ultimately wants everyone else to go home before them. If you choose to view that as victimizing you, then you probably won't be very successful. Only the external forces matter to you at this point instead of the internal forces you can use to shape those external forces to your favor. Cliff was a great example. He knew the pitfalls of walking into the house as an older guy, and he had a plan to deal with it successfully. When he hit a roadblock, he adjusted his plan. He could have given up when the chips were down and then just believed he got voted out for being older, instead, he campaigned, fought and found a way. Victim versus victor (not quite victor, but a damn good showing).
There are plenty of people in the world who think the only way to advance is by hurting others (which is applicable in a zero sum game), but the really successful people in life are in constant competition with themselves, because they know external factors aren't always avoidable, but internal factors are. Jackson seemed really happy for Nicole at different points in the season (double eviction HoH, AFP) and it appeared genuine. People competing against themselves tend to be happy for others who excel at the same time.
In business, I have one main competitor. When they are great, it makes me focus internally to make sure I am even better. It is hard sometimes to focus internally when something really goes wrong to figure out how we could have reacted or performed better, it is easy to point at the market to show why we came up short, but that just means we will fail again the next time those market conditions arise.
Victim mentality is crippling, it teaches you to focus on what you can't affect versus looking internally to what you can.
Rant over, CBS is enabling a cancerous twitter mob to be OK with perennial mediocrity by coddling their victim mentality.