One potential reason would be having doxxed one or two UTXOs resulting from your lightning activities.
Likely when you're opening and closing channels your node software doesn't offer perfect UTXO hygiene, so it's something that can happen.
You also have certain entities spying on your channels, so when you close a channel they could then track the resulting UTXO.
But I could get around this problem just with good utxo management, no? Never reusing onchain addresses.
It's trivial to connect your lightning node, and so its channels, and so the UTXOs. Just signing up to Amboss, you've doxxed all your UTXOs. Being a good lightning node operator and linking contact details to your node, you've doxxed your UTXOs. To what extent is this important? That's an individual judgement.
Any UTXOs that come from my node and will eventually go into cold storage, whether from closed channels or a swap out, eventually get a whirlpool first.
Good point 🤔
Another utility of mixing is obviously if you want to spend on-chain to buy something who doxxes you (a package delivered at home, or as a company one of your supplier or client) and you don’t want your change to be spied on. Actually their are many reasons to mix but you are right it’s not a systematic issue.
That's because you're a dirty node
