Yeah, true, im not sure about Geralt, but Yen is just a prime example for a narcisstic personality.
That aside, i still think the Prologue, aka search for Yen feels too short and therefore the wild hunt reveals itself way too early.
That massively takes away the feel of danger, it should be much more like Geralt chasing shadows, mysterious things unconnected to each other happen, with you as player always getting the feeling of a dark lurking evil beyond your grasp and eventually, the puzzle pieces together ...probably there could be some quests/adjustments to the main quest in the future...at least the modding tools are there...