Do we really want and need a Casio rice cooker?
And since they're specialists in cheap and reliable watches (and calculators and few more things), what would happen to their brand if the rice cookers were shitty?
This seems to be backwards: you judge a brand based on how all its products perform, and if the balance tips towards "most are shit" then it's a shit brand. A brand making lots of things and only one shit (type of) thing, then it's "they're great! Except for their X, don't buy those".
If Samsung phones are bad, don't buy (another) Samsung phone. But when you need a dish washer, and reviews say that Samsung's is the best bang for your buck, their adware-laden phone has literally nothing to do with the decision to buy the Samsung dish washer. They are completely different products, made by completely different factories with completely different QA processes, and completely different target demographics.
Don't judge brands, judge product lines by brands. Because quite often, the people making one thing have nothing to do with people making another thing, they're completely separate "we can't call them companies on paper but in practice that's exactly what they are", and the owning brand itself has barely anything to do with the products they make, unless it's their major brand-recognition product.
You'll have a hard time convincing me that their design and manufacturing issues are not endemic across their entire company. Fish rots from the head, etc.
Oh wait, they do:
https://old.reddit.com/r/assholedesign/comments/co5aw4/unrem...
What about on smart fridges?
Oh wait.. they do that too:
https://old.reddit.com/r/legaladvice/comments/yr80x3/my_smar...
Recently I got a new dishwasher and wasn't surprised to read that the controls of Samsung dishwashers can be somewhat weird and quality is questionable as well.