Good housekeeping wrote as recently as 2023 that ikea kitchen cabinets used dovetail joinery.[1] But this runs counter to my and everyone I know's experience. Not sure how/why they could write that.
Every single Ikea kitchen furniture unit I've worked with has been flat pack, made of chipboard and assembled with these bolts that attach to a sort of a worm screw (edit: cam dowel lock nut), and some dowels, maybe a few screws. Not a single sheet of real wood or plywood, no dovetail or finger joints.
The only reason they wouldn't sell a drawer with a box joint today is because they wouldn't be able make the box flat enough. They certainly use even more complex joints even today.