In flame graphs heavy iteration tends to give "wider" structures. Recall the stacks aren't ordered on the X axis by time, but by contents.
- https://github.com/joyent/libuv/search?q=him&type=Code
- https://github.com/joyent/libuv/search?q=he&type=Code
- https://github.com/joyent/libuv/search?q=his&type=Code
- https://github.com/joyent/libuv/search?q=she&type=Code
- https://github.com/joyent/libuv/search?q=her&type=Code
- https://github.com/joyent/libuv/search?q=hers&type=Code
To a reasonable approximation, it turns out the author of PR did consistently change gendered language in the project, there just wasn't very much of it to begin with. That wasn't my assumption either (I thought there'd be more such language somewhere), and the biases that created that assumption are surely an interesting "this is how these problems happen" sort of side topic.