The New Yorker talks to the (gay) developer who made it possible to have LGB romances in The Sims. They also talk about a competing Nintendo product where it was explicitly disallowed and the attitude revealed is very American:
While Barrett opposes Nintendo’s decision—a form of wounding social commentary regardless of whether the company perceives it as such or not—he understands how the situation arose. “On one hand, Nintendo is a family-friendly company with a wholesome image that they have maintained for decades,” he told me. “On the other, their products are popular with gay people.
It’s the attitude that hetero kisses are okay, but gay or lesbian ones are always unsuitable for children to see or hear about. It’s a deeply reactionary, homophobic attitude but one that’s still widespread in the States, grudgingly shuffling to at least full legal equality between straight and gay people but still rather uncomfortable with the idea of two men kissing, regardless of context. True equality can’t be reached until this idea is gone.