As was highlighted in the linked article, actually more than 70% of Tasmanians oppose the bill making the recording of people's sex optional on birth certificates, so unless the nation of Tasmania is composed of 20 people, you're wrong.
Also, Raquel Sanchez's article for Feminist Current on proposals to erase people's sex from birth certificates was, as you can see right at the top therein, shared 3,100 times so far on social media platforms, which is more shares than most articles in major newspapers like the New York Times earn. You might have noticed that that's significantly more than 14 people as well.
Indeed, the Gender Hurts talk I embedded in the OP itself has been viewed 2,514 times as of this writing. That may not exactly be the same thing as going viral, but it's definitely more than 14 and is fairly impressive considering the secretive nature of the meeting. It also has, as of this writing, earned a 96% positive up-vote/down-vote ratio, indicating that nearly everyone who has seen it appreciated the contents.
So maybe it's actually you who is more out of touch with where people are on this trans stuff than I am.