I don't disagree but, in the Darlington case, I believe the issue around fathering children was raised as being of importance because of how the use and then discontinuation of hormone treatment may have altered Henderson's appearance over time, and how this may account for some of the different reactions to Henderson in the CR.
At least one nurse suggested that Henderson may well have had softer, more feminine features when he initually started using the CR, because he was at that time being treated with hormone meds but, by the time she encountered him in the CR, he had paused the hormones for fertility/family planning reasons, and looked distinctly like a hairy-arsed bloke (my paraphrase).
This argument was especially significant because Henderson had been in post years before any complaints were made, and then the sudden onset and relatively large number of complainants caused the respondent to be suspicious that a bullying campaign was underway.
I don't think any of the nurses was relying on Henderson's future family plans as 'proof' that he is a man and must know he is a man. It was more by way of offering a plausible explanation as to why Henderson may have 'passed' to more people, and had been able to persuade his manager to allow him access to female CRs from the outset of his training, but also why when they eventually encountered him years later they were shocked at first sight.
The hormone meds argument was made alongside the reminder that Henderson began his OPD training in Darington in 2019 and, by the time his cohort should normally have been fully engaged in placements, covid had kicked off. The use of OPD CRs was variable for everyone during the covid years because non-essential surgeries were cancelled; and students were high on the list for redeployment to other areas where they could do something useful despite their very limited experience.
So although Henderson was officially granted access to the CRs from 2019, relatively few people would have had cause to bump into him when stripped down to his holey underpants, and, if they were over the other side of the room and squinting, all they would have seen was his butter soft, oestrogen-boosted complexion.
Once Covid restrictions eased off, and his meds were paused, the game was up.