Shows like this fall into the same category as "The Long Way Round" that Ewan and Charley did. Lots of people call them out and say they aren't authentic for x number of reasons failing to realise that at the end of the day they're making a TV show.
TV shows have budgets, deadlines and other restricting factors that mean its impossible to stay "true to form" 100% of the time.
They're meant to be enjoyable on a Sunday evening on the sofa with a beer/coffee. They're not designed to be presented to the Royal Society for debate!