It adds a trust component. If you use an unreliable or malicious mint, sayonara sats. Ecash is a tool, not meant for savings.

Theres been a lot of good work done on Cashu and I applaud the efforts of it to help with some privacy aspects, but there's more to be done. It may work for some people's use cases but we need to be honest about what its actually doing when value and privacy is at stake.