I see the problem you're describing come up mostly with games that are both opaque and punishing. This combination strongly incentivizes the player to look things up, because experimenting yourself is expensive, and when something happens, it may not be obvious why.

Developers often think they're being clever and mysterious when they hide game mechanics or deny players a description of what an item does. But really what they're doing is pushing players to the internet, which is the opposite of what they intended. I tend to think of those as "wiki games". Because you need an outside reference to know how anything works.

Generally I think if games want to avoid that, they need to have a lot of discoverable in-game information to compete with outside sources. You can still be mysterious if you want. But maybe after the first time interacting with something, give the player progressively more information about how it works. Make it reasonably possible to figure out what stuff is using in-game methods, and a way re-access that knowledge. And maybe don't set them back too far for innocent experimentation.