Trying to dismantle sex/gender/sexuality social assumptions, or the "heterosexual matrix" - eye twitch - is an absolute dud of a campaigning strategy.
It involves a small majority telling a large majority that they need to stop gendering their kids and abandon dreams and assumptions about their future that have a gendered component. It requires every social interaction to start with a declaration of pronouns, sexuality etc because woe betide anyone assume.
No, they're socially embedded assumptions because they're usually true, and the way that society works is that when you differ from these you should be able to explain that with minimal blowback providing you're not explaining you're a paedophile or something. Tolerance, leading to recognition, should be the plan, not demanding everyone wholesale abandon one of the main frameworks that people use to make sense of the world.
You can't realistically demand that society must abandon and not recognise assumptions that are true in like 90%+ of cases, and people being slightly surprised and momentarily lost for words when you reveal yourself as part of a small minority when you weren't visible as one isn't an aggression, micro or otherwise.
