The correct answer to this open question is the following.
What would Diderot think of modern-day versions that solicit user-generated entries, such as Wikipedia?
Denis Diderot (1713-1784), one of the brightest minds of the Enlightenment, known for being the creator of the Encyclopedia. He was a French brilliant writer and historian who was interested in gather contributors to create the first concept of the Encyclopedia with vast information.
Diderot would have approved the modern concept of an encyclopedia as it is the case for Wikipedia because supported the collection of knowledge to be shared with people in order to improve education.
Do such versions undermine or support his original purpose in creating his Encyclopedia?
Every effort to collect information in order to allow people to research and learn is valid. By no means, these modern versions undermine the original purpose of Diderot's efforts. On the contrary, it is a powerful way to share information that could be applied by people and students to improve their knowledge and make further research.