Q: Doesn’t a softer sway bar make a Model Y roll more, not less?

No, the rear Luxury sway bar is tuned to trim roll while staying comfort-biased, so the car feels steadier in crosswinds, lane changes, and sweeping on-ramps without the harshness a stiff track bar adds. Ride quality and body control move together here rather than fighting. The adjustable sway bar end links reset the bar geometry after lowering. Skip them and you can get preload, noise, and a bar that never sits where it should.