It’s not about appealing to gay customers when it comes to these ads. It’s about appealing to the large number of women that see a gay couple and go, “Aww. How sweet.” And since women do most of the shopping... you get the idea.
Problem here is that seeing two people share food between their mouths is physically revolting even for those that wouldn’t be offended by seeing two men kiss. And it’s entirely too sexual and thus inappropriate for an ad for Easter candy. Cadbury made a poor decision then cried “homophobia” after predictable backlash. Blech.
Why do women empathize with gays?