I disagree. Cass is an unbiased third party with no "skin in the game". Someone who doesn't know the MC very well and is unlikely to judge him for being tempted by his own daughter. She is the perfect person to consult. The last people I would talk to, personally, would be my wife, my relatives and my friends. And like Cass mentioned (another great piece of advice that speaks volumes about her character), the best option would be seeking pofessional help but that's out of the question.
Whether you like the character or not, going to Cass makes absolute perfect sense to anyone exercising logical thinking.
I would, again, advise you to either ctrl-skip the content you dislike, move on to another game, or maybe reach out to the dev on twitter or discord and provide them with your feedback. I'm sure it would be appreciated