I've heard enough stories from friends and family about samsung fridges and washing machines dying shortly after their warranty and Samsung wanting crazy money to fix them. Also a friend who bought their top of the line "frame" TV and returned it within a week because the TV had stutter when watching live TV and there is an 800-pages long forum thread about it on their forums, with Samsung basically replying "we're aware of this issue and we aren't planning on fixing it".

On the other hand I have their phone(S21) and I'm very happy with it.