There is a lot to what you say here.
However, if anything has sunk Stonewall, I think it might be this ruling. I mean, their reputation started to crumble with the Forstater case, then came Allison Bailey's case about her treatment by her employer, fully supported by Stonewall. However, it was there that businesses discovered that Stonewall had used its power and the leverage of its 'diversity champions' awards for organisations to show how inclusive they were, to give advice that was completely flawed but who then took no ownership of that.
It was this that started their downfall. They started being outed as giving legal advice that was not reflective of the actual law but trying to sell in their desired interpretation, and then when the organisations were being taken to court because of their advice, Stonewall declared that they had no liability at all.
So organisations started cancelling their involvement. I mean, let's not forget the Stonewall staffing scandals and the things that Nancy Kelley said in the public arena. Then the Cass review also showed Stonewall up for being irresponsible in their advice and their support about children.
Now this ruling. That has proved that Stonewall was spreading a false interpretation of the law across the UK. I am not sure that Stonewall, who was once a valuable organisation who should be well recognised for its achievements in rights for LGB people, can come back from this. It has been 10 years or so since they publicly announced adding the transgender group focus. But they tried to enact change with dishonesty. And when you consider it, the entire premise that people can change sex and that one group's philosophical belief should override other's needs the way this group has demanded, I guess dishonesty is at the heart of the premise too.