oh I see, you want to talk about EAE attacks

> if KYC exchanges rejected sats from LN, that would mean that they're not fungible either right? No. I don't think whether exchanges accept it or not is relevant to its fungibility. I think when people say "Those examples of tracing monero don't count because the users sent them to KYC'd exchanges" their argument backfires: if monero was really untraceable, then you could safely send it to any KYC'd exchanges that accept it without worrying they might discover it came from an illegal source.

who said that "these examples don't count because user sent them to KYCed exchanges?"