Thank goodness someone has said this. There are plenty of people on this thread using a time machine to go back to 2004 and berate MPs for not all being as prescient as Norman Tebbit. I was in my early 40s then and I don't even remember hearing that the GRA had passed. If I had known, I'd have been a bit sceptical, but I wouldn't have expected it to lead to what has since happened.
I now know (I didn't then, and I think hardly anybody did) that the NHS had not long before this established an adult gender clinic at Charing Cross Hospital which treated mostly males. I don't know if there were others. Then they set up a clinic for under-18s at the Tavistock (GIDS) and saw under 100 children a year, of whom around 70 were boys. Watchful waiting was the standard treatment for minors. For adults, it was understood in adult gender services that they fell into two groups, gay men who were struggling to accept their sexuality and saw adopting a female identity as a way out, and cross-dressers, whose motivation was sexual and who were not usually gay. The second group were not referred for surgery. Not sure if they were put on hormones. The former group might be, but only after years of psychotherapy.
When the UK Parliament was asked to pass the GRA, they were assured by experts that only about 5000 people in the UK would be eligible to apply, so it looked like a niche issue. They were also told that they had to pass it because of a ruling from the European Court of Human Rights. A UK citizen (a trans-identified male, I think) had taken a case all the way there to demand the right to marry his male partner. His case was that his right to a family life was being denied. The UK could have addressed this by introducing same-sex marriage, but in spite of having a huge majority in the House of Commons at the time the Blair government didn't think this would pass (I suppose it would have been a conscience vote so not whipped), so went for the GRA instead. The litigant would have got a GRA, applied for a female birth certificate and then been able to marry.
(It does seem very odd to me that the government was so sure that same-sex marriage wasn't the solution, but they were very keen on focus groups and must have thought they had their finger on the pulse there. In spite of this, as we know, we got civil partnerships and then gay marriage within a few years, so I think that was a missed opportunity. Stonewall was then a gay rights campaign group and once they had decided to lobby for gay marriage their campaigning probably made a big difference.)
It's a bit rich to criticise one of the very few MPs from that time who has now admitted it was a mistake to pass the GRA. What about criticising all the people who voted for it and have never accepted that? Harriet Harman comes to mind, but there are plenty more.
And let's not forget that one of the key movers and shakers trying to get more legal recognition for trans people was Stephen Whittle, through the organisation Press for Change, which I think Whittle ran with Christine Burns. It wasn't all trans-identified males pushing this. There were very few trans-identified females at the time but Whittle was very vocal and persistent, had become a law academic in pursuit of legal change and may have been more convincing then than now.
Also, in 2004 the internet was still pretty new to most of us and social media was in its infancy. Nobody knew then how that was going to dominate the lives of many young people, especially socially isolated people already struggling with their mental health. Nobody could have foreseen that within a few short years from the passing of the GRA gender ideology would have become so popular and prominent on social media, and most people had no idea that the GRA and similar measures in other parts of the world were the foot in the door to push for more legal rights for trans-identified people.
I remember when this was first being discussed on MN people were still talking about this as if only males were identifying as trans. It took time for the statistics coming out of GIDS to sink in and for it to be understood that not only were the numbers of patients at GIDS rocketing but there had been a very sudden switch from 2:1 boys/girls to the other way round. Even now transactivists are resistant to the obvious answer to this, namely that it's a social contagion.
Nobody saw this coming. The people to criticise are the people who worked tirelessly behind the scenes to make it happen.