Yeah some people are being very extreme about it to the point that it's aggressive towards society in general, and I don't like that. I think it's simply the result of what tends to happen when marginalized people start to take their power back... they throw the pendulum back in the direction of oppression rather than letting it stop swinging. Which doesn't help anyone, really, but it's understandable. Most of the trans people I know do not do this, though, and just want to be accepted as they are.
My girlfriend's sister (brother now actually) is an asshole about it, and it really gets under my skin. As a woman she was always gay, and was very anti-man (their father is an abusive asshole so I get it, but my girlfriend isn't that way, she likes guys and is never disrespectful to anyone), to the point that she would be rude to me to my face just because I'm a man. Then at age 38, she decided she is a man and started taking hormones. Come to find out a lot of her friends are doing it, too. She suddenly started telling my girlfriend that she's such a "normie" for being cis-gendered and straight, and almost was trying to make her feel bad about it, or something. It was weird. She immediately started aggressive scolding people who just met her for not referring to her as "him", even though she doesn't look like a man and hadn't eve introduced herself. She started talking about how referred to babies as a gender is oppressing them. It really annoys me, especially since until recently she didn't seem to feel that way, and now suddenly expects everyone to feel the same way or else they're ignorant/oppressors/etc. It seems like she just wants to be angry and feel morally superior. But my two trans friends (I have met a number of others but I have two friends who I actually hang out with who are trans man-to-woman) aren't like that at all, they're really sweet and are just quietly trying to be who they are.