You are absolutely right! 
Ariela and Sebastian let us share their lives in their flat through the cameras. They both have jobs and hobbies. Their work takes place outside their flat and is none of our business. They share everything else with us, but we do not have the right to criticise them for it or to make assumptions about what we see and what happens outside the flat.
If we don’t like what we see, we don’t have to watch it. But we should not discuss that here. Rather, we should enjoy what is being offered to us.
They are living their lives the way they want to and not the way the viewers would like them to and that is perfectly ok.