The Nedraz Heritage Entry contains this section:
"In their lost time they created empires and warred and sought to know all that could be known under very different stars than we now see. And with their Strange Sciences they sought to change the world to suit themselves, to make the beasts of the world their servants, to change the very face of the world. In time, their pride grew beyond their abilities and they made a mistake that could never be forgiven."
These two particular phrases are directly tied to Valusian Serpentfolk lore. Specifically that they used strange sciences (Sorcery, Genetic Engineering, Etc) to modify other creatures into their servants. They'd take a rhinocerous and make it into a scale-covered reptilian monstrosity more pliant to their will. They'd take their own people and warp them to look like humans to infiltrate and replace important members of society, like Kull the Conqueror.
The body horror is still there... it's just written into the margins so you get to fill it out in the way that best fits your game, rather than being locked into a detailed ceremorphosis.
If you want it to be horrific sorcery that takes mere minutes, you can. If you want it to be giant glass vats with people floating in strange liquids and goops... It's an option. Heck. Maybe I'll release a Nedraz-directed supplement for the Malison and Abomination equivalents not as "Dendar-Focused Successes" but the twisted work of their sciences...
