The founding documents explicitly list Kyle as the sole founder and shareholder of Cruise. If what you state is true then Jeremy's claim is entirely baseless.
This counter-complaint conveniently breezes past that fact, and moves directly on to allusions of a verbal contract, as memorialized in the YC app.
Founding documents aren't the only document through which someone can be given 50% shares. If you found a company on your own, and then give me 50%, and it is on paper with your signature and mine, I now own 50%.
It is more complex than than, someone may create multiple conflicting documents and the you need to resolve them by going to court to figure out how to resolve the conflicts.
This counter-complaint conveniently breezes past that fact, and moves directly on to allusions of a verbal contract, as memorialized in the YC app.