What's the political assumption of pong?
I mean I don't disagree with the sentiment, the moment something has world building or a story or goals that relate to real life non-abstractly, there's at least a political assumption, potentially an intentional statement. And people just don't notice when it conforms to their world view. But politics free entertainment can exist, even if being able to engage in that entertainment necessarily requires some sort of engagement with real politic systems.
Though the most memorable games tend to be the ones very intentionally making statements anyway.