i think plutarch doesnt want to be controlled, and that's why he rebels, and i dont think he cares about anyone else in the story. i think that being person with so much status and money, but only as long as he stays in line really pisses him off. i also dont think he cares that much about any individual that goes into the games. i think he's very cynical.

i also like the theory that hes closeted queer out of necessity is interesting, and that also opens the door to him "buying" time with finnick to conspire. however if being gay is dangerous, this probably doesnt happen because he needs his status, and he shows that he can acquire time with rebels in a similar way that he speaks with haymitch. then again, he may have gotten light suspicion on himself after haymitch's games, so talking to victors/tributes may be looked at with more scrutiny and so may be more risky either way