Proper landmarks for sections are missing, adding them will make XWiki behavior with different screen-readers more stable and in-depth.
View pages are the ones where most of the standard user navigation time is set, and are the pages where disabled users might be the most impacted by the quality of the landmarks.
Forum topic available here: https://forum.xwiki.org/t/accessibility-best-practice-landmarks/12051
In particular, make sure that the breadcrumbs elements are properly labelled. See https://jira.xwiki.org/browse/XWIKI-16144