Non-binary person's Aug. 7 underscores increased risk
Intersex activists also sharply criticized measure
Advocacy groups have sharply criticized Viktor Orbán's government
Referendum passed by 63-37 percent margin
Victor Madrigal-Borloz spoke at ILGA-Europe conference
Prime Minister Joseph Muscat is among measure’s supporters
Vote took place after Angela Merkel changed position
Kremlin said it plans to review landmark decision