As a person who's installed quartz countertops for a living, I'd shy away from IKEA kitchens. I agree with your point, but I'd take exception to the general quality of their cabinets in Canada at least.
Idk, I've seen 40-year-old Ikea cabinets being totally fine (in France).
Nowadays, the trend is that people buy the cabinet frames from Ikea, and then buy the doors, handles, and bottom support from someone else who makes more durable ones.
The thing is that with Ikea, I kind of know what I get. From a custom kitchen cabinet maker, I could get something that lasts a lifetime, or something that wears quickly.