So, I usually play Rogue Servitor. I found out that Biopop growth is linked to housing still, which doesn't make sense since the way they play disconnects their biological population from their housing stats, and have their jobs provide a -1housing effect for them instead, giving the playstyle that organics are separate from your regular robot force.
Now, as Rogue Servitor, to get high Biopop counts, you have to make small planets or habitats that have extra robot housing and an organic preserve to reproduce your Biopops, and send them to your main complex drone collection planet/ring.
I guess Nihilistic Acquisition will be required now too?