Well I mean, would you be fine with the last CT killing Ts that are in an area that they're allowed to be.
For example, they have a freeday no past first cell. A few are rebelling as usual, but would you be fine if the last CT runs around and kills the ones that aren't rebelling, like just swimming in the pool or jumping on the big cage.
Edit: I know what you mean about because he's the last CT and most Ts would be rebelling already, but there will be those ones that didn't do anything and just died because the last CT is paranoid.