I think the answer to this is that there are different forums for different conversations. This is a Walt Disney World forum. While many Americans participate here, people from all around the world post here (this is an English site after all!). This is a fan site for discussing a place we all love. There are social media pages, forums, and website that are geared towards politics. The proprietors of this site aren't doing anything wrong tooling their website to fit its mission. In the same way there are social conventions at parties, funerals, church services, and workplaces, this website has conventions that we can follow. And if we don't follow them, then we might be asked to leave.