Except when they’re not and Apple tries very hard to bury the problem while the machine is still relevant, so your choices are either to pay for (expensive) repairs out of pocket or dump it and buy a different model. Then years later once the machine is obsolete for most, will they finally give in and offer a free repair to the lucky ones who have been left holding these hot potatoes of a defective model. Not every time though, sometimes they just won’t accept responsibility at all, ever.

See the GPU issues, the battery issues, the butterfly keyboards, the yellow tinted panels…