I had a Hubspot developer build a Pillar Page template and the rich text editor that makes up each of the chapters is not expandable (doesn't have the little button that says "Edit in Expanded View", so you are forced to work in this tiny little window. I know that type of rich text module exist as I have used it elsewhere.
Support said "
At this time the "Edit in expanded view" option is only available for the default Rich text modules." but could absolutely see how this would be handy.