No, Fortnite is/was directly made by Epic Games and is their most well known product/service.
Better analogies would be Azure as "I have to use Windows" or AWS as "I have to use the Amazon store", which sound a lot less ridiculous than your analogies.
The good faith interpretation is that if the fortnite division had any reason to benefit from that passport info, they would be able to get it. That's not a super stretch.
So it's not fortnite at all. It's something owned by the same company that happens to also own fortnite. That is actually a huge stretch.
Imagine if I said "I have to pilot a 747 just to change the temperature of my house" (because Honeywell makes both passenger jet avionics and thermostats).
