Once it does go live, anyone could see the lower ping between two users of this network. If they say it got enabled, that wouldn't be hard to independently verify
https://www.starlinkflights.com/how-to-check-starlink-flight:
"Unlike older geostationary satellite systems that had coverage gaps and high latency over remote oceans, Starlink's low-earth orbit constellation covers the entire globe. Qatar Airways, United Airlines, Alaska Airlines, and airBaltic all offer uninterrupted Starlink on long-haul international routes."
Do you have any more detailed or up to date information? I’m not doubting that they built ISL capabilities, since ISL is often used for collision avoidance and small scale satcom - I’m doubting that it is being actively used to route internet traffic.