I think the debate on language is part of a greater discussion in the field as to the fact that software development and other tech fields are disproportionate in its representation, whether or not it’s a problem, and how to resolve it. These sorts of addresses approaches in language are an easy and immediate signal, like switching from language like policeman, postman, etc.
Arguably it is much harder and will face much more resistance if GitHub attempted to solicit internship programs, scholarship grants, and supported programs necessary to churn the wheels on rolling back the factors preventing our field from being friendly to a broader demographic set of people.