When we sing our National Anthem, we should be singing about why we want to support, defend and celebrate our country and its people. Many people who sing our National Anthem would want to feel proud about their country and may not necessarily support the Monarchy. In this situation, they are denied the opportunity to celebrate their country. If monarchists were to sing a revised National Anthem, it would not necessarily preclude the Monarch, so they would also be able to sing it with conviction.