No, this is not a thread about Earth's shape. That's a topic I don't discuss, and I offer no opinion on that here. That said, I have done a deep dive on it, but not to answer the shape question, rather to determine the motives of those who actively debate it.
The unspoken reality is, it is a test. It is a test of your susceptibility to being brain washed. Whatever shape you think it is, if your belief can be flipped, you can later be convinced of anything they choose. Keep this in mind, next time you run into that. In the simplest terms, it is a test to determine if you can be re-programmed for use by another.