Stuart is the one who's really high up. I think he has a four wide business which is really rare. I very much doubt that the house is theirs. They all tend to rent. They often can't get mortgages, or they want to show others what's possible (yeah right) so that they sign up and become their downlines. So they'll rent something they can't afford to buy. Nicola Wills is the same. Flaunting her life in Ibiza.
In terms of not adversiting products, Arbonne are encouraged to not talk much about products. They don't really show them much. That way it sets them apart and doesn't make them look scammy like other MLMs. But of course they still are.