Most higher end cameras like the Panasonic G6, Nikon Z8/Z9, etc. hardly have any rolling shutter. You'll certainly NEVER see rolling shutter in any PRACTICAL application for video unless you pan like a true madman, either in photo or in video. (I am a professional photographer and videographer....)

In fact for sports and wildlife, you'll NEVER see rolling shutter in pretty much any existing camera, either in photo or video. For photography it's been like this for decades and for videography recently.

Where rolling shutter does appear is in the use of the electronic shutter only, but the Nikon Z9 already solved that, same with the Sony a1.

The main benefit is flash sync and a very SLIGHT improvement in some types of distortion when shooting at very high shutter speeds. I'd argue that the Nikon Z9 is a much better camera if not wanting flash sync due to its lower base ISO.

So to reiterate, the main benefit is not the reduction of rolling shutter, especially since any camera in this price point already has minimal rolling shutter.

Global shutters are COOL, and the reduction of rolling shutter is COOL, but not the main point, though of course most future cameras will probably switch to global shutters at some point if the base ISO can be lowered.