I think at this point that we can stop using the argument of too big to fail, everyone use it so it's safe, they are large entities we can trust them (oops: MtGox, eBTC, FTX, Celsius, Credit Suisse bank!).
Anyone can decide which mint use and trust for  a few sats of change. Use mint of a dev you like, a big company or associations, someone met at a local meetup, a friends, family or your own.

I respect that you want to stay as close as possible to the core Bitcoin experience and ecosystem, in the beggining Lightning was rejected as not real bitcoins, now only a few purist would argue that Lightning should not be used and everytjng must stay on-chain, maybe cashu will become part of the Bitcoin ecosystem and accepted by the majority for some use cases or maybe a better solution will be found on Lightning that avoid larger fee to manage liquidity before accepting your first 21 sats as zap without relying on a couple of big centralized entities. 

 "at least they are large centralized entities" 

 Don't stain yourself jumping through logical hoops