This article has reminded me that just because people proclaim to be a feminist, Christian, humanist or terrorist doesn't mean that they are often primarily that thing.
This particular feminist would probably identify primarily with being a mom and in certain scenarios one of those identities must take precedence. So even if you do feel Uber is anti-feminism it still seems compatible that a feminist who primarily identifies as a mother would take a job at a company like Uber to better provide for her own career which in turn allows her to provide for her kid(s).
Humans are messy.