I think the ARM builds do not include a GUI, it is the daemon only. I'm not sure why Qt isn't enabled, maybe there is a dependency problem. You can try to build it yourself with the GUI following the instructions at https://github.com/dashpay/dash/blob/master/doc/build-unix.md
Please report back if are successful or if you run into specific errors, so we can open an issue to enable Qt for the release builds.
No@xkcd, input here?