She wasn't scared. She was advised not to go.
Not really that odd as different people are saying different things. And the listing of scandals was in response to a question asking for sources about things the Queen has done, it's not a personal remark that these are especially the worst things she's ever done.
I'm against the monarchy on the basic principle that people should be born equal under the eyes of the law, and that there is no place for a monarchy in a democracy. There's definitely things about the Queen I don't think she's done well for herself out of, but I don't think personal arguments against the monarchy (ie. Liz and Charles are bad people) are all that compelling reasons to get rid of it.