Its lightning for beginners.  Way better than Alby and Wallet of Satoshi in terms of privacy.  If you're starting with 0 Sats and no knowledge on how Lightning works then it makes sense since you have no ability to open channels.  Privacy is also much better than popular wallets like Phoneix.  I'd love to see everyone running their own Lightning node (Zeus, LND, Blixt) but this probably won't happen due to complexity.  Also in a high fee environment Cashu has little to no fees to use.  Its definitely not for life savings, but can be a really good spending/nostr wallet