No, I don't have to learn any of the skills, at all, and I don't want to. I don't want to spend days or hours or even minutes learning the finer points of pit BBQ, and that's the entire point of buying this robot. I don't have to learn when to turn up the heat or turn it down, I don't have to know how much wood to put in or when. I don't have to check on the condition of the product. I simply give my charge card to Williams-Sonoma, haul the BBQbot home and plug it in, add meat and wood, and get delicious brisket out the other end. Every. Single. Time. I wasted zero of my time learning how to barbeque brisket - I just enjoy the results of other people's learnings. If the robot fails, I drag it back to Williams-Sonoma and ask them to service it. It would be no different than any other tool that I own that I don't fix myself.
I don't understand your preoccupation with fear of breakdowns of systems. I know that some days, despite scheduled maintenance, my truck will breakdown in some way I can't fix and that I'll have to have to deal with a problem. Fear of the inevitable breakdown doesn't mean I sell my truck today and walk to work. It means that I understand the truck can break, and that some days I'll have to call for a tow. Similarly if the BBQbot fails in my restaurant, I tell the servers to 86 the brisket, and we sell grilled chicken until the replacement robot arrives.
As a business owner, why would I buy a BBQbot instead of hiring a pit master? Because the robot costs me $20,000, and it stays in the kitchen 24x7x365. A pit master has weekends, takes vacations, calls in sick (or doesn't call in at all), and costs me $60,000 every year. I'd be far more worried about hiring a temperamental person that could quit and cripple the menu on a busy night. And if I discovered I was that utterly dependent on the robot, I'd simply buy two of them.
Every business risks breakdowns of all kinds of complex systems every day: plumbing, fires, melted freezers, employees quitting, roof collapses, electrical problems, labor problems, yet most manage to stay in business even through disasters. Why? Because they know how to adapt to problems, and because taking the risks yields far more reward than doing nothing; instead of sitting there paralyzed by the fear that something might go wrong.