She mentioned it herself in the Medium post

> This kind of code change happens all the time. We frequently add things to make our jobs easier or even to just share hobbies or interests. For example, someone changed the default desktop wallpaper during the walkout last year so that the Linux penguin was holding a protest sign. The company has never reacted aggressively in response to a notification such as this in the past. It’s always been a celebrated part of the culture

https://medium.com/@ksspiers/google-fires-another-worker-for...