And according to Clef's post at least the waifu bots can't process....that stuff from male humans. Then again the waifu bots in particular were made of very cheap stuff because the owner of the company was a very cheap bastard but I assume that a female robot regardless can't process...that stuff.
Well to be fair the original prototypes aren't as shittily made (Those being Keco and the two who were killed/destroyed in the earlier story.) but the mass production ones were the ones with serious issues. Akai's a special case as her first body was a standard Mass-Production model but her second body has been modified by the original designer to be far more resilient and battle capable.
But yeah, white goo gums up their systems and bad [parasitic bomb] happens. Think the movie A.I. when David eats food.
One thing I don't think I mentioned is that I always envisioned Josei Prime's drive to create the waifubot as a means of being able to bring his wife back from the dead. He had no way to replicate her personality or memories. So, feeling it best not to make a robot with his love's face and voice but without any of her memories or identity he instead made three test personalities. But when it came time to actually build the androids, ran out of money, and brought the idea forth to Lightcorp for funding, in exchange for the tech being used for a new product. Which is shortly before where the story picked up.