There was evidence and it was discussed in the ruling by the Supreme Court. Please read it.
For example, https://www.supremecourt.gov/opinions/24pdf/24-656_ca7d.pdf
Gorsuch pg 3
Can you link it here would be super grateful
It's super interesting to see the custom code in TikTok not in Reels that can enable this not into politics but the algo would be cool to look at
Assuming you mean this:
It basically just says that the app asks for the user's contact list, and that if the user grants it, the phone OS overshares information. That's really thin as evidence of wrong-doing. It doesn't even say that this capability is currently coded into the app. This sounds more like an Android/iOS problem - why is the contact sharing all or nothing? Would the ban still be OK if the app didn't have read contact permissions?