So, from my experimenting, it would appear that source links created in a document, linking to your resources, do not work on DTTG. Unless I’ve got it wrong. So I guess it is a limitation of iOS, shame. Which means that DTTG only does “some of the job ”. You can make links, but you can’t use them until you get to your desktop…
Your conclusion is incorrect…
This will be addressed in the next maintenance release.