My own opinion, just from some observations, as to why the distancing is somewhat because our current movement for rights is being partially backed by 'intersectional feminists/anarchists' and because said movement seems to be more about getting kids diagnosed with 'gender dysphoria' or getting our surgeries to be covered by insurance rather than the angle LGB went for, which was a little more along the lines that 'what we do in our bedrooms shouldn't be anyone else's business'.
This is probably going to sound like a very unpopular opinion because I'm a bit of a libertarian in my philosophy I've found (left-leaning, but nonetheless libertarian) and I'm a transman, but I imagine that we'd get better results fighting for our rights if we simply wanted to be legally recognized as who are and not discriminated for or against in work, yet willing to work for and pay for physical changes as we see fit; as opposed to our current situation where intersectional feminists are trying to educate young children to not be offensive to these people who could explode into suicidal tendencies if they're not privileged to be sick enough to be allowed to get bottom surgery. And before you say that last sentence sounds cold, let me ask what sounds more encouraging of a way to grow up.
Would you feel more confident about life if you couldn't transition until you were an adult, but when you reached, say, the legal age to vote, you could legally change your name and gender, and while hormones and surgery required money out of your pocket, you wouldn't have the risk of being fired from your job and you wouldn't earn the ire of your peers because being transgender was part of why you're still kept around, and while you had to accept that not everyone will want to sleep with you, you could still be yourself and have complete autonomy? Or being slapped with a diagnosis for the rest of your life, getting your hormones and surgery covered by insurance, acquiring a job just because of a quota enforced by people with a half-hearted interest in your well-being, and being secretly hated by people because you have some connection to a group of people who will ruin your lives just because they don't use the right language around you?
Mod Edit- no profanity please.
Edit: Apologies for profanity.