I'm all for smart appliances, but a smart washing machine is a solution in search of a problem.
I personally love smart washers, they are a solution to the problem that we used to have at home.
We have 5 adults at home. The app lets us know if it's being used or not, and lets us know how much longer left.
Also let's us remind the other person to move their stuff in the washer to the dryer.
I personally do not want to walk over to our laundry room in the garage not connected to our house to check each time to see if it's available, then walk back to my room to grab my laundry, then bring it to the laundry room
I would prefer if everything was able to be used on a local network instead though. Like a Samsung machine that hosts a local server where data never leaves the home and still works.
If you use a Firefox account, you should be able to sync your history and stored passwords.
I use Fennec from F-Droid as well.
Don't know why you have so much user data. Maybe one of your extensions?