(Context I uses to repair phones for everyone’s favorite insurance company Asurion, so my perspective is more about the physical device and components)
I fucking hate them. Super fragile AND super expensive. Not to mention if you have one and the screen protector get damaged manufacturers warranty only covers 1 replacement. Fixing that inner screen out of pocket is around $600-$700 which at that point is just buying an entirely new note or S-series phone. The only nice thing I can say is that the 4 Gen flips and folds are a bit sturdier than the first generation, so they are improving over time. Maybe by the fold 7 it will be in a place where consumers can buy and repair them for reasonable prices, but right now I always advise people to stay away.