Nelson Mandela's paintings from prison to be sold as NFTs

A pencil and watercolor illustration of the interior of a prison cell, viewed through the open doorThe Cell by Nelson Mandela (attribution)
The Guardian reported that five watercolor paintings created by former South African president Nelson Mandela depicting scenes from his years of incarceration will be sold as NFTs next month, as well as a handwritten description of why he created the artwork. His daughter is the one behind the project, and she says that "My dad was all about creating an accessible society. This is a way of democratising his art." She does not explain why there is a need to sell them as NFTs in order to accomplish this, or why this makes them more accessible than them already being available to view online. She also doesn't explain how pricing them at $3,500 for a set including one of each, or $700 apiece, can be considered "accessible".