The mint operators want the mints to succeed.
No one has been rugged from cashu.
You can add as many or as few as you want. 
Soon cashu will allow 1 spend from multi mints to spread your total risk.
For new users they will need to save up 100k sats before a self custodial ln channel. After that move out of mints at the threshold you arr comfortable with.
Cashu can't rug a single user, rather the whole mint. 
The mints are way better privacy and require no personal information to start.