Because the post is not about aliens. It’s about people. Aliens serve here to help you see the problem from the outside, to not use what you know about the animal. It’s supposed to show you the reflection of our way of thinking about fossils.
It’s not just about systems, It’s about conditions. Certain conditions make certain strategies more profitable - see game theory. I think low population density and hard life conditions cam lead to kindness being among the winning strategies.
They were trying to explain the religious view. For those groups abortion is murder of an unborn child. It doesn’t matter that there’s no harm to the society - they see it as a harm to the child. Comparing it to murder was spot on, because that’s exactly how those people see it.
Movie making and planning takes a lot of time and money. It’s done in advance. You can’t just stop everything that’s been in production from releasing.
In totalitarian countries, those who listen to certain types of music are persecuted, because it links them with demografic that can be threatening to the regime. Even if your country is not totalitarian now, the existence of this data could be potentionally harmful to you in the future (just like any data, really).