I do wonder if her aversion to the word castration is because men will find it viscerally shocking. The TRA talk about ‘bottom surgery’ which sounds so cutesy, but castration as a word leaves no doubt.
There is a great deal of deliberate use of euphemisms in transgender medical treatments.
Sex-change surgery (genital surgery, breast implants or mastectomy. Humans can't change sex)
Chest surgery (elective double mastectomy)
HRT (its cross sex hormones, not replacement)
FFS Facial feminising surgery (plastic surgery including ear pinning, nose jobs, forehead, adam's apple shaves etc)
'Euphemism Definition
The term euphemism refers to polite, indirect expressions that replace words and phrases considered harsh and impolite, or which suggest something unpleasant. Euphemism is an idiomatic expression, which loses its literal meanings and refers to something else, in order to hide its unpleasantness. For example, “kick the bucket” is a euphemism that describes the death of a person. In addition, many organizations use the term “downsizing” for the distressing act of “firing” its employees.
Euphemism depends largely on the social context of the speakers and writers, where they feel the need to replace certain words that may prove embarrassing for particular listeners or readers in a particular situation.'
literarydevices.net/euphemism/