It's a game that paints itself as having a story. The player choices go beyond the "peek or follow her" options that are the staple of most other games in this genre (although, as others have pointed out it's not what it once was), so when characters have dialogue and scenes together, then it's worth a discussion, don't you think?
It's why some games have long discussions, and others don't. Has nothing to do with taking anything seriously (or not), it's just about sharing opinions.
It's no biggie either way, my brother. Chill.