I'll add, Dr. Sal Mercagliano has an excellent YouTube channel that covers shipping (a topic he's a qualified expert in) and he has a video discussing this: https://www.youtube.com/watch?v=JJmqCKtJnxM
The bottom line is that the alleged incident occurred in deep water, making an accidental, unnoticed anchor runnout *very* unlikely. He describes it as "A coincidence, and a very strange one," that this one vessel was seemingly over both cables just at the time they were severed, and gives a visual of maritime tracking to illustrate this.
You have to develop subspace (i.e. faster-than-light) communications for this to work. The distance between two points in Europe, after bouncing off a satellite in geostationary orbit, is very, very far, and EM waves can only travel at lightspeed, resulting in very long latency. It's significantly faster if your satellite is in low-earth orbit, but you can't keep a satellite in a fixed position there, so now you need a whole swarm of them so you have sufficient coverage at any time, and you need a way of periodically boosting their orbits or replacing them as they fall into the atmosphere.
There's a very good reason the world likes submarine cables for internet communications.
Sweden seeks clarity from China about suspected sabotage of undersea cables (3 points, 55 minutes ago) https://news.ycombinator.com/item?id=42268586
E.U. Vessels Surround Anchored Chinese Ship After Baltic Sea Cables Are Severed (5 points, 16 hours ago, 2 comments) https://news.ycombinator.com/item?id=42262913
This story previously with limited discussion https://news.ycombinator.com/item?id=42256553 https://news.ycombinator.com/item?id=42263100
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