I think it's more a symptom of today's western society as a whole, rather than something that's specific to the transgender community. For example, 10 or even 5 years ago, people from different political parties could have a nice, civilized discussion about policy. Now it's all about loyalty to your tribe, uncompromising attitudes to any viewpoints other than your own, and polarizing figures on each side.
Not that long ago, we used to have to get to know and befriend our neighbors across the street, which forced us to see other people as human beings regardless of their background and viewpoints. Now we can all just stay inside our homes, seek out, and interact only with other people who fully agree with us (thanks to the internet and especially social media). When all we hear are voices similar to our own, anyone that disagrees with us can easily be made to be seen as the enemy.
That's what's happening in the western world, and that culture of divisiveness and polarization is seeping into every aspect of our lives, including the transgender community.