It does nothing to infer Geralt dies. It shows monsters approaching him of which he has killed hundreds of over the course of the base game. That is implying he dies? Meanwhile it actually literally shows Ciri giving up, if you don't make the right choices to give her the strength to fight.
To each their own but I highly doubt you're going to find many people that agree with your assumptions. The game clearly shows otherwise with how everything is handled and what happened throughout.