Mostly, it's down to a switch from hydraulic to electric power-assisted steering—in many cases, the electric motor is placed on the steering column, which has the side effect of filtering out road forces, keeping them from being transferred back up the column and to the driver's hands via the steering wheel.
Other, more expensive electric power steering systems mount the assist motor on the steering rack, which somewhat mitigates the problem, and being thoughtful about suspension geometry—as the Polestar 4 is—can also pay benefits.