For me these actions of the Deutsche Telekom are already impacting usability and access for specific services. It also happened in my family where a game patch Download (FFXIV) was extremely slow and the update would constantly crash/stop. Only solution was using a VPN and first connecting to some other region like Japan.
And this despite the Deutsche telekom being on the premium side of pricing...
Just wanted to say thank you for the information that this is based on Wifi Aware and the proprietary AirDrop protocol from Apple. Helps understanding why there are some limitations.