Starlink @starlink Sep 23, 2023 · 9:29 PM UTC:

Starlink is available on all 7 continents, in over 60 countries and many more markets, connecting 2M+ active customers and counting with high-speed internet!

Thank you to all of our customers around the world 🛰️🌎❤️ → stories.starlink.com

The significance is as u/Obvious_Parsley3238 pointed out: "250k last march, 1 mil last december, 1.5 mil in may, 2 mil now".