Ok so
1) To folks asking how do transgender genitals work? Look it up on google like you have this vast free encyclopedia of knowledge but feel that you just must ask and speculate about Caitlyn's genitals in a thread about her just being her. Don't do that. Stop making everything about genitals. Look it up. Educate yourselves and if you are amazingly still confused keep reading. There's so much trans 101 stuff out there it's ridiculous. You wouldn't go into a thread about a Baseball player reaching some career milestone and start asking about how baseball works. So don't do that shit here.
2) DON'T EVER EVER EVER IMPLY TRANS WOMEN ARE NOT REAL WOMEN. Do not question their style choices in such a way as to reject their identity, as to dehumanize them or imply that they aren't really trans and are just human dolls or men in dresses or stereotypes and caricatures. If you think you're making some salient point? News flash you aren't.
3) To people being all ummmm errrr using proper pronouns make me uncomfortable I'm just never going to do it. Cut the crap. If it bothers you that much keep it to yourself instead of wearing your assholery like a badge of honour as if to say I'm a rebel! You're not a rebel, you're a jerk. To people saying we shouldn't condemn said jerks and instead support them so they'll grow ? No. We don't treat overt and proud racists with kid gloves so let's not treat overt and proud transphobes with kid gloves.
I'm going to give you an extreme example of why pronouns are important, call it unlikely but it is rooted in 100% possibility:
You have a trans woman friend, she has finally decided to transition and as part of that all but has no choice to come out to you. So she does and starts to live as herself for the first time 24/7. However, she's told the people she knows that she's trans but isn't going around telling everyone she meets or sees or encounters that she's trans. No you're in a bar and you're all hanging out as a group and you meet a group of strangers and everyone hits it off. So you're hanging out all together and someone from that group leans to you and says hey your friend is pretty cool she's super smart/funny/pretty/interesting/whatever and because you're a fucking selfish asshole you say yeah he's pretty cool, and proceed to say he/him/his through our. Congrats dick weed you just outed your friend. Now maybe it goes well maybe this new group ignores your transphobia, maybe they even convine her to drop you and they all take off together and gace a great night whilst leaving your bigoted ass in the wond. Or maybe they're disgusted and when they see her go into or come out of the Womens bathroom and decidex they need to teach that freak a lesson and beat her to death. Congratulations your selfish inability to use a measly fucking pronoun just got your friend murdered.
Or maybe it's not even that extreme. Maybe your friend is so unlucky that you're the only person who she can come out to (as in no other friends and overtly bigoted parents) and she does and your response is to deny her identity and call her he all the time. So now your friend conludes that no one will ever accept her that she'll have to live out her life in shame and secret, as a lie, so she ends her pain. Congratulations you're selfish bigotry just helped drive your friend to suicide.
Now if you read all that and say well I'd never do that to a friend! Then why do you think it's cool to do it to a stranger