Apple Working on 20.5-Inch All-Screen Foldable Notebook for 2025

https://forums.macrumors.com/threads/apple-working-on-20-5-inch-all-screen-foldable-notebook-for-2025.2379036/

it is still hard for me to get excited about tablet computers.  This is described as a notebook, so does that make it a laptop replacement?  If so, why would I need a laptop with no keyboard?