Yi Peng 3 crossed both cables C-Lion 1 and BSC at times matching when they broke

October 2023 there was similar incident where Chinese cargo ship cut Balticonnector cable and EE-S1 cable. Chip named 'Newnew Polar Bear' under Chinese flag and Chinese company Hainan Xin Xin Yang Shipping Co, Ltd. (aka Torgmoll) with CEO named Yelena V. Maksimova, drags anchor in the seabed cutting cables. Chinese investigation claims storm was the reason, but there was no storm, just normal windy autumn weather. The ship just lowered one anchor and dragged it with engines running long time across the seabed until the anchor broke.

These things happen sometimes, ship anchors sometimes damage cables, but not this often and without serious problems in the ship. Russians are attempting plausible deniability.

After the Nordstream pipeline attacked and destroyed, its reasonable to expect shortened lifetimes for undersea cables and sattelites.

Yes, this is why having a prompt satellite launch capability to replace attrition losses is now a strategic imperative. We need to be able to put up new ones in a matter of hours, not months.

If someone starts blowing up satellites it’s pretty much game over for space based communications.

https://en.m.wikipedia.org/wiki/Kessler_syndrome

The military is shifting toward LEO constellations for communications such as SpaceX Starshield. Kessler syndrome isn't a serious concern for those because the orbits decay fairly quickly anyway.

That "quickly" is on the order of years (as opposed to decades, centuries, etc). If the Starlink constellation goes boom, you can't start launching new ones for several years -- and then the build-up would take years, from there.