What is your basis for this assertion?
Turns out she is Maria from Warsaw that is also a producer at a website that "is the French salon of 21st century".
Source: https://madeincosmos.net/
It is quite amazing that she managed to look after her kid while writing daily on her Substack and managing a platform.
The profile picture does not smell diffusionsy to me so I hope this is something genuine.
The answer to that is alluded to in the last point - grandpa (and probably grandmas on both sides) are there to step in when she needs "me time".
I initially read it as a parody of mommyblogging. This is right on the edge of being that, with writing as authentic as the hero image.