Rated G-G Rated movies are intended for General Audiences, with all ages admitted. To the MPAA, G ratings are most notable for what the films don’t include – no sex and nudity, substance abuse, or realistic/non-cartoon violence.
Advertisers don't want to put money towards a site that has frequent discussions about sex and violence, and they'd want as many people to be able to comfortably visit this site as possible, so yes, G Rating would fit.
Although some of y'all take this way too harshly. It's more PG if anything.