line 286/314 of DTAttributedTextContentView.m sets the link url to nil.
Is there a reason why we can't have href's around img src?
Those ARE supported. You provide your own subviews for all text attachments, which includes images. The line you quote makes sure that there is no gray rounded overlay from DTLinkButton (or other custom subview) added. Instead you would have a subview that handles the link directly. See DTLinkButton's use in the delegate.