When I hear about the Ethereum scam it seems very strange to me. While Ethereum itself is not a scam, it is true that scammers have used the platform and its associated cryptocurrencies to carry out fraudulent schemes. I never consider ethereum scam because ethereum is a legitimate and widely respected cryptocurrency. Ethereum is second only to Bitcoin. Ethereum is the king of altcoins, if the king is involved in a scam his followers will follow. But I believe Ethereum will strengthen itself in the future.
Scammers are using all kinds of scamming methods, like sharing phishing links, fake airdrop promotions, and hacking, and they drain any kind of fund they see in users wallets. The blockchain is transparent but there are ways that a user can use to cover his tracks. And they are using those methods otherwise, how do North Korean hackers manage to cash out their hacking funds from the market? They are the ones behind a lot of major hack and they are using a mixing service as well.