I like how SF Debris describes it:Given how ridiculously they handled the emotion chip in the previous movies, I'm glad they ignored it.
I had a lot of problems with Nemesis, but this wasn't one of them.
"Ah, I see. In Generations the chip is fused and can't be turned off. In First Contact it's fused but can be turned off. now (in Insurrection), it can be removed. By Nemisis I'm sure it will just be a cologne he puts on."