One thing, about your point on 'gender deniers', I would try to avoid using the term 'gender'. It's a term perpetuated by the left to avoid direct conversation about biological sex. There has been a concerted effort to separate the concept of gender and sex through justification by the social sciences. This phenomena is not new, historically the social sciences have always been used to justify the predominant ideology of the time.
Gender is considered a 'social construct' under the theory of social constructionism, a philosophical theory not based on statistical evidence. Once you start debating about what is 'Gender', you've already fallen into their trap. I would use the term 'biology deniers' because it avoids people from making roundabout arguments on what is gender.