If you don’t want a part of your body to get sore, then that part shouldn’t be pushing against something that doesn’t move along with it. That’s the thinking behind the vabsRider bicycle saddle, the two sides of which pivot in time with your pedaling.
Seems overdone. A simpler, cheaper version of this will probably take off as an alternative, but normal seats are so cheap that they’ll stay the default seats.
People with money to burn and sore bottoms will probably buy enough of these to keep the product going a while.