Lightning nodes are hot wallets. Its one of the risks. Hot wallets aren't bad. They are just higher risk than cold wallets. This whole discussion has gone off track into opinion instead of a discussion of tradeoffs.
Coinjoin isn't perfect but it also isn't something no one should consider. Based on the comments some folks don't understand how it works and dont seem interested in learning.
I will add that there are efforts to make lightning nodes safer but any hot wallet is connected to the Internet and that adds risks.
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