Well, I don't think freewrites are a crime in any shape or form. In fact, a freewrite could become a complete literary piece.

My contention is that if we extend the prompts to a Choo-Choo train, let's say of 5 extensions of a story one after another one, then it cannot be a complete story as it will become a mixture of different writing styles, convictions, and philosophical views. This type of assemblage could, in my view, only be maintained on the plot level. In other words, it will become a mini soap opera. Actually, there is no harm in soaps as well. It's just not my cup of tea.

As for prompts being amorphous, it is in no way a derogatory evaluation. They should be amorphous and ambiguous as far as the theme and idea of the piece is a concern because they should allow multiple possible developments by writers of a different background, cultural values, and philosophical stands.

So you are cool and thank you for those challenges!