It appeared they rant about how "doing all the things in life later" was the biggest drawback and continues to contradict the point by providing a timeline that places them at 33yo with all of the listed life goals achieved, starting with a graduation (I assume by the context, with a PhD, at 27). Some of such life goals are not even achievable for some. It sounds like a simple attempt to humble-brag.

Assuming that they worked their tush off or pushed for opportunities also sounds coming from some privileged background, as it seems to assume that hard work and proper initiative would be sufficient in achieving such things, while for some people the first guard is already getting the necessary elementary education, while being in a stable and safe environment.