The girl dinner trend is just trauma dumping with some disordered eating vibes
It's showing off what you made to eat when you only had to make something for yourself. It is often accompanied by a trauma dump to explain why you're eating alone. It's not about normalizing fixing yourself a meal outside of expectations as a woman, it's turned into needing to have a justification to eat alone. The disordered eating vibes are based on tying so much emotion into the food and putting so much into the presentation. It reminds me of the diet checking in pro-ana and pro-mia communities.