YMMV. I have always had extremely pleasant, hassle-free, and fast support and warranty from Dell. It's not that their monitors or laptops fail more often, I've just been buying them for a decade.
All the hardware I’ve had from Dell has fallen to pieces (with the exception of the first one: a 320LX from ’85[1]) but they’ve been helpful in trying to shore up the inevitable at least.
Yep. My second Dell laptop had the screen hinge break, because they anchor the damned things in plastic, and the screen case is rarely rigid. Google "Dell laptop hinge issue" and see how many results you get, and how far back they go. At least 15 years.
There's no reasonable explanation aside from planned obsolescence.
[1] https://www.computinghistory.org.uk/det/54920/Dell-320LX/