Yes, that actually happens in real lawsuits. It is not even rare.

Are you under the impression that lawyers have never included things that later turned out to be false or unprovable in their initial filing of a lawsuit? If lawyers are so infallible, why would one have openly admitted to firing someone for a legal medical treatment they received?

I think that, per the parent who you initially replied to's point, that taking a tabloid's clickbait excerpts from one-side of a lawsuit is a terrible way of understanding the truth of a dispute.