All art, all stories are an expression of one's own thoughts and ideas. All stories are about inner and outer human conflict. Your characters' goals, motivations and the adversities they face will always be dictated, or at the very least strongly influenced by your ideology and world view. No fascist will ever write about a communist utopia positively. No communist will ever uncritically write about a great man pulling himself up by his bootstraps to become a billionaire. If you're an "apolitical gamer" you will unquestioningly write about whatever you're finding in the trash can of ideology at the moment. Similarly, everything you write will be tainted by "modern day thought" because everything we have ever experienced has happened in the modern day, including learning about the past. Every fantasy world is merely a reinterpretation of ours and every sapient fantasy race is allegorical to humans in some way, whether you intend it to be or not. We cannot comprehend non-human conflict and thus human conflict is all we can write about.
These people really do believe the curtains are blue, huh?