The CS, like a lot of the public sector, are the boiled frog.
CS Departments have always had a commitment to equality and diversity e.g. equal pay, addressing sex, race and disability discrimination etc. Each new pc became embedded in the culture.
This meant CS en mass were, and are, used to a culture of inclusion, it is embedded in policies and procedures. The GRA 2004 was accepted and again embedded in policies etc. Stonewall and other external groups promoting specific pc have always been part of the D & I approach as “experts” to make sure the CS followed best practice.
As Allison Bailey, and others, pointed out Stonewall changed in 2015 and with a drip drip approach they slowly captured first D & I teams, then HR policies etc. Most of the changes were not challenged as they were reasonable e.g. using gender neutral language etc.
To continue the boiled frog analogy, as the water heated up some of the changes became more worrying and so some people started to challenge e.g. Toilets, pregnant employees etc. but by then the no debate, transphobic accusations were used to silence them.
Fear of being seen as transphobic/discriminatory when one of your performance objectives relates to D & I silenced people. Board members becoming Champions for each PC etc. sets the corporate stance.
As a pp says there is now the SEEN network, and CS are pushing back but at the end of the day their job is to support Ministers.
I believe the tide had already started to turn. Ironically Adam Graham/Isla Bryson and Nicola Sturgeon may inadvertently have speeded up the process e.g. the new guidance on trans prisoners.
Maya Forstater’s EAT judgement will have been carefully considered by HR and legal advisors but it takes time to revise policies And to change the culture when the debate is so toxic.