I think lightning is a powerful tool for privacy. I'm looking forward to seeing all the cool things that will come of ecash too.
As far as splicing, submarine swaps, and using lightning to obfuscate on chain footprint goes, I don't know how well it compares to whirlpool/coinjoin/payjoin.
I like to think the way I use lightning in conjunction with utxo management offers me excellent privacy on chain, however I'm not sure how rock solid my ip address obfuscation is.
Avoiding kyc is about more than just privacy to me, to aquire Bitcoin kyc free requires a deeper participation in the network, in the culture of Bitcoin.
Earning Bitcoin, mining Bitcoin and buying Bitcoin p2p are all excellent ways to get sats.
Using exchanges to buy/sell Bitcoin is extractive on local Bitcoin economies, just like Walmart is extractive on rural America.
Keep the sats local, keep the sats moving locally and the circular economy will be built.
