Gender reassignment is a protected characteristic, so any large corporation surely have a duty of care to ensure that all employees are aware of this, to prevent them unwittingly coming into conflict and breaching aspects of this unwittingly?
Just as they would do training about race, disability, sexism, etc?
The test at the end is to ensure people have understood the training
at no point does this training say that you must accept, just be aware and knowledgeable about it?
being gender critical is fine, but this training is there to stop people breaking the law in a place of work/when customer facing