is this b/c of what trevor noah said? b/c what he said is rlly sad.
i think it's fine 2 do those when the baby's gender is revealed, b/c it's a milestone in pregnancy (or birth) & others will be exicted 4 u 4 decent reasons.
but doing it once ppl "decide" their gender? first, no one can rlly "change" their gender. they can only live in denial about it. second, that is a horrible thing 2 do; it's rebellion against the God who created u. it's rlly disappointing that ppl would consider partying over direct rebellion like that. & third, not everyone would support it, & it'd cause divisions. Now i'm the type of christian that will love everyone i'm around no matter what kind of horrible things they do (unless they're mass murderers & tyrants like hitler, stalin, zedong, or mussolini). But i don't support what the Bible speaks against. Since the Bible calls us 2 love, I will always love others & help others 2 the best that i can tho. but what i'm saying, is that everyone will be excited at a gender reveal party at the little stage. if u do them when the prsn's 10, u'll only cause wars. & fourth, there are always reasons to enjoy the type of prsn u r. if u feel ur habits are more the opposite gender's type, then do what u like. don't call urself another gender, & certainly don't act weird & try 2 pretend u are the other gender. girls can like sports, war & bloodshed in movies or like to run around (hence the phrase tomboy, which i don't hear of often in these discussions). boys can like 2 read & draw. (otherwise there'd b no male artists & authors). it doesn't mean they're being the other gender tho.
there are other reasons, but i can't get in2 all of them 4 time's sake.
i hoped this helped at least some ppl.