He has to tell the Ukrainians that he's using their data for chats with Putin:

"We don’t knowingly sell your personal information, but we still have to tell you what we collect from you and how we use it."

https://www.starlink.com/legal/documents/DOC-1000-41799-67?r...

Location data is specifically covered and Musk was not using the location data for 'goods and services' but instead in violation of privacy rights was using this information for geopolitics instead:

"Location Data (not precise geolocation), which includes your general location in order to provide you with the appropriate goods and services."