If I understand it correctly, the implication is that Jaws, King Kong and Godzilla are trans-inclusive so people who want to acknowledge the reality of biological sex are worse, ethically speaking, than such creatures.
The big point being missed is that pretty much all gender-critical people 100% agree that people who identify as Trans should be able to live their lives in peace. We just believe that it's possible to do so without destroying the rights of women to have single sex facilities and opportunities when it's a proportionate means to achieve a legitimate aim. People aren't thick and can spot a false dichotomy, it is not monstrous to uphold women's rights and require that the path to a dignified and liberated way for people who identify as Trans to be able to live their lives in peace must not be at the cost of destroying other people's rights.
If you need help campaigning for 3rd-space gender-neutral options then I'm 100% happy to help and that would be a much better use for those campaigning funds.