sadly I don't see many or they rather lurk at the moment.
One strength of Millenials is the value they put on their social circles and teams. This could hold many in, regardless of what goes on with the organization, it is a social network and carries a lot of value to your generation.
Gen x can be fiercely independent (sometimes to our own headaches). I think this has empowered a lot of us to wake, even though we grew up in an era that i believe beat the Armageddon drum WAAAAY louder. The literature was loaded with end of the world images, we had the revelation book, we lived during the end of the cold war. So I think we were hit with a lot of Fear Obligation and Guilt (FOG) that made learning TTATT thee most frighting thing we could do. that made it slow for us, but once we learn its hard to not be vocal as you said.
And I think you should start your own you tube channel. There was another young couple on their Christian and Katja, I assume they are millenials and their delivery was great. Very refreshing and good for others to find you are starting to lurk and doubt. So i would seriously consider it if i were you.