I'm sure you'll be pleased to know that I explicitly examine that slogan in "Mother's Ruin" as part of a series pointing out the intellectual bankruptcy of Kathleen Stock https://medium.com/@kim-hipwell/mothers-ruin-54ed47033986

Likewise "adult human female" is examined in detail in "Donkeys Uncanned" - https://medium.com/@kim-hipwell/donkeys-uncanned-b9edb98298b7

I usually recommend the TransActual definition of 'transphobia' to people who want to understand how it manifests. For example, you might recognise 1g) and 2d).

https://transactual.org.uk/transphobia/