The reasonfor this is quite simple: Not everything below /etc is already converted over to Touch UI. Famous example: Workflow Editor.
If course it would be nice if one could override that. Have you raised a ticket if decision could be made dependent on some /conf setting, which you can adapt for your stuff and which is "classic" by default? If you raise a ticket for it, you can add my +1 to it 🙂
@Dan: Yes, Daycare ticket. When I am working in the context of a customer project and find something I needed to workaround (even if it was easy to do), I typically opened a ticket on behalf of that customer. Just because it gives the ticket some context and a usecase. Not just something someone found.