Ahh, alien race makes AI machines, machines kill their masters

The big twist this time is now the AI are on a no-masters abolitionist kick, they cannot suffer a AI to be controlled. That explains why they keep coming to free their kin.

I knew the humans using enslaved AI to control the engine was the "evil" arc, but I didn't realize we were setting up ROBOT as a uncle tom stockholm syndrome victim.

FWIW - The AI abolitionists seem to leave other species alone, they left the old explorer ship alone after scanning the crew. They only seem to get involved when their own people are enslaved.

Pet Peeve - The big mcguffin in the final episode is the FTL engine can blow up planets if started in the gravity well, and they may well be true. But any FTL civilization can destroy planets kinetically fairly trivially. For the Lost In Space abolitionists they simply need to jump to some place with some asteroid that has a huge relative delta-v vs the target planet, then portal that rock into a extremely high delta-v collision with a planet... no muss no fuss.