How does a character being gay change their personality in any way?
Please explain this to me, because I don’t understand what you are talking about.
None of these characters are developed in any way that would go against them being gay.
You pointing out Lucio being affable is a good reason why he’s gay. You forget there’s plenty of crusty angry gays too. There’s antisocial gays, there’s socially awkward gays who try their best but cannot make more than two or three close friends. What does that have to do with sexuality?