Design should always target the extreme user, those to the right and left of the bell curve, rather than the mainstream.
This ultimately benefits the general user. Example: the ford focus, originally developed for elderly people.
“The extreme users are those on the margins of a challenge or solution who can provide unique insights because of their special needs, perspectives, or actions. Taking into account the special needs and new perspectives of extreme users you are increasing the opportunity for innovation. The insight from them can uncover a meaningful solution that you would never think about without them. “
https://www.linkedin.com/pulse/extreme-users-design-thinking-process-voice-you-want-patrycja-b%C5%82ach#:~:text=The%20extreme%20users%20are%20those,increasing%20the%20opportunity%20for%20innovation.