I start from the position that sex is a clearly definable, material reality, while gender is less clearly definable.
I understand that gender dysphoria is very likely an innate biological condition, that is very distressing for those who have it.
In contrast, I believe that the majority of gender characteristics are socially constructed.
I find myself wondering if people with gender dysphoria would be as distressed by their condition, or feel the need to transition, if gender was a more fluid and nobody cared how you present yourself. However, people’s description of the strength of compulsion to remove physical sex characteristics suggest that, for those with dysphoria, the condition is deeper than rejection of social conditioning. Such a deep psychological need to remove functioning body parts is, by most definitions, a pathological condition. Until now, the best way found to treat that pathology and improve the quality of life for people with dysphoria is to change their bodies to appear more like the opposite sex.
The thought of a child going through this type of treatment fills me with horror, especially given the large proportion of those who present as trans who don’t go on to physically transition. That sort of treatment should be absolutely a last resort, reserved for adults. That said, I sympathise with parents who truly believe their child is likely to commit suicide if they are not treated. These families need support, but not from ideologues who don't care if they become collateral damage.
I don’t think there is any justification for people without gender dysphoria to be able to ‘id as trans’. That amounts to appropriating the experience of transsexual people and is completely inappropriate. If you don’t have gender dysphoria, why would you be any different to anyone else who rejects socially constructed gender stereotypes? You aren’t, and you have no reason to claim special protection under the law.
The reason my statement of my position on gender criticism focuses heavily on trans experiences is because people with gender dysphoria are being used as a trojan horse for men to invade women’s spaces.
Certain spaces are separated by sex as a safety measure for women, because of male violence. This is not a perfect system and operates on trust and social convention.
The introduction of self-ID is particularly threatening because it erodes the trust and social convention. So, it becomes conventional to see people of the opposite sex in single sex spaces and socially unacceptable to challenge it. For example, where I ask for a female nurse to take a smear test, and a transwoman nurse arrives. In that situation, I am put in the position of either having the test in a situation in which I have complied with my boundaries being breached, complaining and being accused of bigotry, or not having the smear test, none of which are acceptable.
My biggest issue with the whole replacement of ‘sex’ with ‘gender’ is the totalitarian nature of how it is being implemented. We are being told that the words we use to define ourselves does not mean what we understand them to mean. That we must use them to mean something else entirely or face social approbation. We are being told that subjective reality is less important than completely undefinable or testable feelings and that we must agree that this is the case or we are bigots. That is totalitarianism and I will not comply with it.
(Christ, that was long! You did ask...)