Potential benefits from grouping logical pieces of information and moving buttons to custom actions: reduce redundancy (by removing repetitive controls) and reduce cognitive load (by making easier to know what item will be affected by each action)

Tumblr app is open. If each post is not grouped and its buttons are not custom actions, VoiceOver would announce: author, report, post, share, reply, re-blog, like, author, report, post, share, reply, re-blog, like, author, report, post, share, reply, re-blog, like... Notice how share, reply, re-blog and like, keep repeating over and over (the author and post can be different in each post). If a user selects a like button, VoiceOver will say: