If they don't like neckties (or even looking like your average man in general) for the sake of getting back at their dad, that is something they must really get someone to look into it professionally and fix it (no one wants to be controlled by their own desire to go against what they despise, after all), but they seem to enjoy appearing androgynous, so in general, I don't see anything wrong with what they're doing. Their own perceived gender or sexual orientation isn't even the topic, so it's strange seeing many people in these comments talking about trans people and homosexuality when that's not what the chapter is trying to say at all. Sorry about the ramblings.