I'm more afraid of data collection rather than a wifi piece breaking down. Also don't like the trend of paying a monthly fee for certain options/functions. Some of the newest appliances require a smart phone for setup before it will even function. From what I've read, Bosch dishwashers are going this route. What stops a hacker from breaking into your appliance and screwing with functions remotely?
Back in 2012 when CIA Director David Petraeus stated "We'll will spy on you through your dishwasher" the public laughed it off. Not so funny anymore.
https://www.wired.com/2012/03/petraeus-tv-remote/