Adding this functionality to all ArcGIS Online derived applications would be extremely convenient for sharing those with parties outside your organization!
When publishing a Survey123, a shortened URL in the format "https://arcg.is/xyzxyz" and an associated QR code are generated for ease of sharing your survey with the wider world. Similar functionality is possible in Experience Builder utilizing the Share widget.
I often utilize bit.ly or other similar QR code generating platforms to accomplish this, but it seems like if that capability is automatic for Survey123, it should at least be optional for all other ArcGIS Online mapping applications.