I can see that the housemates are right in saying that Christopher is annoying. He just seems to butt into conversation and lacks self-awareness. Two examples in the same scene today:
1. Saying that he could have been imagining the voice. Here he tries to make himself the focus of attention while Jale was speaking and also perhaps throw her under the bus making it look like the was hearing things. She sorted him out swiftly.
2. Putting his feet in Danielle's bath. Did he even ask her? How rude.
He must be a nightmare to live with. But oh no, the others are bullies and he's the saintly victim