Advent make a very good scapegoat for the other houses really. They take the whole bio engineering and slavery and combined them in a actively displayed way with the drones collecting your trash every day and their monstrous bodies. I would be really easy for someone to go to The Flow and say "hay, see those weird guys, everything you are mad about is totally their fault. Just look at those mad scientist's and their creepy drones, total bad guy material" 

I should add some clarification as to what those drones are in the char section, they are basically reanimated corpses rather than living slaves, like my char is, so in a way they are recycling. In their minds they are using the current system to advance humanity, to eventually replace the entire work force with drones and lift humanity beyond what evolution gave them. The dead shall provide for the living and Merkadia shall become a post-human utopia. or that's what they believe they are doing anyway, but they lack focus. Mainly they just tinker in labs making whatever each scientist thinks is a good idea at the time, be they glow in the dark ferrets, snake people, gladiators or giving themselves extra arms. Which is what happens when you give a bunch of mad scientists a research budget and tell them to go make stuff that might benefit Merkadia and the house.

So we have 2 Ideal fueled groups at each others throats, egged on by the other houses so they weaken each other and then the more influential houses tear them apart once using the armed forces once someone takes it to far.