User blog comment:DaNASCAT/Technical Update: November 21, 2016/@comment-24473195-20161122152730/@comment-5558012-20161122171018

"Although it still doesn't eliminate the problem that one can't add a summary before the page is automatically saved. If someone creates a new page with the intention of adding more later, a summary may explain that."

I've seen people, including myself, leave summaries on page creation. These can definitely help future editors and shouldn't ever be eliminated.