It all comes down to trade offs.
Accepting zero conf bitcoin transactions is risky, but if you're a merchant maybe the risk is worth it to keep your customers happy.
Using a custodial LN wallet is very risky, but keeping a couple thousand sats in one for ease of zapping might be worth it.
Ecash clearly carries risks. You are trading away your bitcoin to get it. The question being worked on is will it be worth the risk.
Yes, risk assesment is key. Anything "hosted" has risk of being taken down by the government. Maybe if something like bisq could be used to trade ecash or any p2p app with no central server.
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