Boating accidents are a meme created by Monero bros almost a decade ago. This meme caught on and because its idea is so powerful Bitcoiners repurposed it for their own propaganda without realising that one can not move Bitcoin anymore after a boating accident without criminalising oneself.

If you have no KYC Bitcoin you don't need to stage a boating accident. If you have KYC Bitcoin a boating accident is basically a lifteime freeze of your Bitcoin, meaning your potential purchasing power is now zero despite you still holding the keys.

Monero doesn't give a fuck about KYC or not. It's above the law. Fake boating accidents only make sense when you don't lose the purchasing power.

Well they know your entire transaction history with them

Beyond that it depends on how you funded your wallet and what you do after you close the channel with them

But the point is that there's plenty of data to audit

I.e not private