Sure, it’s fine to post the data or any analysis of it. The only thing we aren’t supposed to show in public is the solution code.
Yes, this dataset is unrealistically small for a task this difficult, so it’s hard to draw any generalizable conclusions. In Week 4 of Course 1, you’ll see real Neural Networks applied to the same problem with better results than we see for LR in Week 2. Here’s a thread in which I show some experiments with perturbing the dataset to see what happens. My conclusion was that the dataset is carefully curated to get reasonable results.