I am expecting some flask from fellow trans people tonight who know my views but will consider me a traitor now I suspect.
I wouldn't think of anyone as a traitor for signing it but I do think that many are falling for hype.
I mostly live in Ireland where we've had 'self ID' since 2015. It's not really 'self ID', the GRC application form has been cut from being the same as the British one, (16 pages long, with 24 pages of advisory notes), to two pages, which is a good bit shorter than the British are proposing.
In Ireland, no supporting medical documentation is required for a GRC and it takes about two weeks to be issued. So, you fill in a form, enclose a cheque and get your new birth certificate two weeks later.
So far, 240 Gender Recognition Certificates have been issued under the new rules, a slightly lower uptake than was expected and nothing else has really happened. Life has gone on and no one except those who's lives have been made a bit easier, has noticed.
The prison service is still as bad as it has ever been at running prisons. Public loos are still uninviting enough not to offer anyone any sanctuary. Priests are still the only men in dresses that children need to be warned against.
Two years on, there was a review of the new system and it was found to be so successful, without a single complaint or evidence of any misuse, whatsoever, that the government now considering opening it up to non-binary people.
Of course, we don't have an hysterical right wing press here, whipping up fear and loathing.