I mean... I would consider building a business based off the assumption that the Fed will operate how it documents itself to operate and not do things fraudulently or covertly, to be a lot lower risk than, say, building a business based off assuming the same of, say, Tether. Yeah, I'd say the Fed is pretty trustworthy, and the fact that a lot of people depend upon it is a signal of that(not a proof, or a guarantee, but a signal, same as in the library dependency example)