Some developers are seriously considering de-listing their games from online shops when the Unity Runtime Fee kicks off at the start of next year, meaning some titles built on Unity could end up being temporarily — or permanently — unavailable. Here's what developers are saying about the Unity Runtime Fee on social media, and what games could be impacted.
No because this goes against GDPR. They aren’t allowed to have anything identifying users “phoning home” without explicit consent/logging into a launcher.
If it included identifiable information then yeah it would be a breach. This is just using a mac address most likely that will also if they do it right will be hashed client side so even if a bad actor could do something with that info they won’t actually get it anything from it anyway.