"Store and Share Files" would be much better as "Upload and share files" or "Upload and attach files". The unexpected terminology is unwarranted.
Ah, and no, the point is ABSOLUTELY NOT to store files. We have mediawiki.org and Wikimedia Commons for that: if people start thinking they can store files on phabricator, we have a serious problem. So I really hope nobody reads it that way, or this bug is worse than a simple discoverability problem.