The person upthread claimed nothing was controversial/ unpopular 10 years ago, the internet was some sort of free speech utopia.

I'm not sure how bringing up anti LGBT crowds typing things like "it's Adam and Eve not Adam and Steve" 20 years ago shows there was no controversy on the internet 10 or 20 years ago.

If you are correct that typing things like that was not controversial, it sounds like identifying as gay or LGBT was indeed controversial, putting false the claim that the internet was a free speech utopia where you could type anything and nobody would care.

I used the word "dangerous", not "controversial". In the past, you could have a controversial opinion online without risking your livelyhood and safety. No longer.

The conservative cancellation of Dixie Chicks in 2003 would seem to suggest otherwise. From wikipedia "At a 2003 performance in London, Natalie Maines of the American country band the Dixie Chicks, now known as the Chicks, made a statement criticizing President George W. Bush and the imminent Allied invasion of Iraq. The criticism led to backlash from country listeners, who were mostly right-wing and supported the war. The Dixie Chicks were blacklisted by thousands of country radio stations, and the band members received death threats."

In 1991, the immutability of gender might have raised the ire of 1 in 10,000 -- if even that many.

That's a gross underestimate of the number of transgender people. And given that we haven't been recognized as legitimate until very recently, historical statistics are extremely shoddy. I personally knew two people who identified as transgender in the late 90s, in my high school class of ~450. They didn't transition until much later in life, so wouldn't be counted in stats.