I can understand wanting it on your local network. Being able to check remotely how much time is remaining. Getting alerts if it needs maintenance. In a big house with multiple family members all doing laundry, just checking to see if the machine is in use before hauling all your stuff down could be nice. But, that info doesn't need to leave the house. I don't know why you'd want that information leaving the house.

It's starts with a sales pitch (not just to you, it's sales pitches all the way down) about how the washer can send the user status, maybe let them schedule, etc. They probably have an app to pair with it to keep it all in-house. One thing leads to another, every appliance gets wifi and sends a ton of data to a totally undoubtedly secure and anonymous centralized server full of harmless data for the sake of saving the customer 15 steps.

Big Brother didn't ride in on the back of a commie tank, he was invited in for the slightest increase of convenience.

My smart appliances serve as nodes for Pied Piper’s new decentralized internet.

It tells them when the cycle is done. Which apparently a beep can't do.