For everyone else, its a game guide. The worst that can happen is that they get the wrong information about how Trains work in Factorio. There wouldn't be a need for me to track users or clicks or whatever in a hypothetical game guide community website.
As I stated before: I know some game communities (ie: Minecraft or Eve Online) can be toxic. But the Factorio community isn't like that. So I'd be comfortable hosting a Factorio webpage under HTTP.
If I were hosting a Minecraft or Eve webpage however (warning: toxic community ahead), then I'd host it under HTTPS due to the dastards who troll and harass others in that community.
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That's the more important part btw: understanding your audience. Some game communities are toxic and full of harassers, trolls and so forth. But other communities are lax, friendly, and can get away with lesser amounts of security.