It is like a crabs in bucket mentality mixed with in-group machiavellian politics.
I'm not going to comment on the rest, but this is a gross and misogynistic remark.
If you need to introduce yourself, then you clearly don’t live in a village where everyone knows your name. ;)
And you know what everyone else is feeling how?
I don't doubt people that are, exist, but I highly doubt it's a high percentage and certainly very far from "everyone else".
> thinking they're the live of the party, while everyone else is just silently annoyed by them.
Not saying this is you, but my impression is that people who lean into silent annoyance also depend on passive aggression, fueling it with resentment that they aren't as outgoing (or whatever) and deserve the attention instead, and those who are especially anxious and/or neurotic imagine that everyone else shares the apparent negative feelings, effectively acting as they imagine everyone else wants them to act. People have a hard time letting themselves just vibe and roll with it if they think it might make them less appealing by association. Maybe they are the life of the party, since it's not much of one if people can't pump some life into it
You also never know what you might experience from talking to someone. You may make a life-long friend. Or learn about something you didn't know.
It doesn't mean blab about things you shouldn't, being insensitive, etc - but isolation is not the answer.
That detail is probably unnecessary.