“The gemora Pesochim 42:1… is telling us to learn the great trust they had in their sages. They did not question, what makes your water better than our water?””
I didn’t see where any meforshim learn that from the gemora. Sounds like it’s your personal diyuk, and isn’t muchrach, because:
1. How do you know they weren’t a bunch of amaratzim who didn’t think to ask, and why should we learn from amaratzim?
2. Where do we find an issur in asking “why”?
3. Anyone nowadays would ask “why”, so we obviously don’t hold like what you’re saying the gemara means, which it doesn’t mean that anyway.
4. emunas chachomim doesn’t mean we don’t ask why we do something