I don't understand the people who refuse to never turn their camera on because they "don't like how I look on camera" I feel that is is all about reading the room. If you are in a meeting with a feel there is no need to have your camera on the whole time owhole bunch of people and you are mostly listening in I r at all. On the other hand if it is only a handfull of people say 5-6 max where you are having a discussing it is more appropriate to have a camera on.
I have a coworker who announces his presence by announcing his self every time he joins. It does not matter if two other people are in the middle of a conversation, once he joins a meeting he announces that " name is here" I just don't understand it.