She was a symbol of an institution that has brought perhaps the most harm out of any institution in our time. She was also the leader and sovereign of the UK while they engaged in atrocities against Malaysia and much of the rest of Asia and as GP points out Africa. She is not just "some women" and it is a position of privilege to see her as such.
The same language has a very different meaning when coming from a people who have been colonized rather than coming from the colonizer. People who have been oppressed have every right to celebrate the passing of their oppressors.
This is honestly a bafflingly ignorant comment. The British royalty are responsible for reprehensible acts against humanity. To pretend as if the queen is no different than any other person undermimes centuries of oppression by the British empire.