The chances of it being due to accident seems astronomically low, but I didn’t realize the intentional cutting was by an actual anchor. That makes sense though, as it would be an easy, discreet method.

Cable cuts are very common worldwide and are very rarely reported widely in the media ( that I've seen ) unless there's an opportunity to tie it to Russia. Then it's reported as suspicious or there's a paragraph in the article speculating about the security implications of purposeful attacks on communications infrastructure. IMO it's a ploy to generate anxiety about how much money is being spent on "security" i.e. the military, and how we ( Europe ) need to increase it.

It's by far the most common.. but.. Multiple cables in this manner is IME /less/ likely to be an anchor, although it has happened.

I meant they are intentional, as opposed to being a side-effect of ‘anchoring’ the boat to keep it from moving.