Sounds like communist-era 'getting the population to police each other' in political correctness. There will always be people that say/do bad things - the world will never be perfect and if you think it has to be you will never be happy. Still, we should all do our bit not to add to the mess.
I find your reaction, particularly the first sentence, confusing. Are you not aware of the content of the conversation in question? Do you consider it "political correctness" to seek ways other than unqualified acceptance to deal with someone who is bragging about sexual assault? If you were in a conversation with another man, and he told you that when as a celebrity, you can "grab them by the pussy", what would your response be?