Situation: User asks for gender inclusive language reasoning not everyone is male. Dev responds saying that the user is trying to advertise their personal politics in the project pull-request, suggesting that by personal politics they mean “inclusive pronouns”.
Reason it is transphobic: Note the Dev does not mention cis women, they dont mention women at all (but it isn’t like women are accused of pushing an agenda related to inclusive language). It is heavily implied to be trans people because of the dogwhistle language. Trans people are the main targets who are accused by others of pushing an agenda when it relates to personal pronouns. At the very least it is male-centric, which apparently from the context of the PR was making some contributors uncomfortable. If the Dev had said, “I got other more important stuff to do, someone edit the text and request a merge”, no one would be talking about it. It was his immediate 0 to 100 response accusing the user of pushing a political agenda. They dont need to say the words “I am transphobic” to say something transphobic.