An interesting test case. This was a glitch away from a major accident.
If the regulators stay silent, it is effectively consent to a massive easing of the rules. Other carriers will certainly take note.
If not for the pesky Hungarian ATC, this could have been more easily swept under the rug. Now I believe there has to be a response, but I've been wrong before.
Unfortunately this is a political issue as well and courage is not abundant in politics.