Nobody on Earth at 2022 AD knows anything about existence of alien-made Dyson spheres. But at 2022 AD the Webber infrared telescope was sent into space to discover them, or put limits on their existence possibility. We will get result in 2023 AD. But then we will get to know, that somebody knows result (that includes us). Hence, at 2022 AD there are two hidden knowledges: 1. are alien there? 2. Somebody knows it.
In Islam, we do not have to understand what is out there. Nothing wrong with learning though and we are to increase our knowledge in things that will benefit us in this life and the next.
Islam is considered very easy and hard, very knowledgeable, very intriguing, very vast, very enlightening, and many many many more beneficial attributes to it. It doesn't have a downside unless you are a disbeliever, but even that can be beneficial in a person who is willing to learn. Downsides are not a bad thing if you are a believer.
But still, in saying that what is the point that you are trying to make?