What kind of birth a woman has doesn't directly impact anyone other than the woman and the baby. It's one thing to speak up about someone else's birth because of serious safety concerns for one party, but the research on elective cs vs vaginal birth seems to be fairly inconclusive. So there's no reason for anyone to freak out on the grounds of concern for her or her baby. Awaitingjuno has (or should have) the option to choose an elective cs for herself and I don't think what she or any other one individual does has a direct impact on another unconnected person. She certainly isn't advocating that everyone should do what she is doing, only that everyone should have the choice. Her choice isn't a criticism of anyone else who made different choices. Nobody needs to "fix" her by talking her into making a different choice.
Further, there's a lot of "choice" rhetoric on MDC in favor of choices that are a lot riskier than CDMR, but somehow a lot of other things get a pass where this doesn't.