With Samsung it's almost always caused in my experience by either the use of plastics that are not up to the stress requirements of the application, or the use of electronics that are not capable of standing up to the use duration.
Samsung appliances that I have had have always had either broken plastics or fried circuit boards.
And they've got to know that these things break because there are always replacement parts for the specific ones that break, but if you're not a DIYer you will pay 70% of the cost of the original appliance to install the part that broke.