I suppose base money (m0) can be fixed. Broader money (m1, m2 and m3) I think cannot be fixed. I don't think they need to or should be either.
Fiat is broken by design
Fiat is broken yes, but we'll still have broader money in the form of credit and IOU's on a Bitcoin standard
Not mortgages and credit cards and car payments. Earlier generations (in America at least) did not need them when the money was less inflationary.
If I'm not wrong, you're saying the quality of credit instruments will improve. If so, I agree with that. India is a savings-driven economy for the most part, as hard assets are the norm here. But the proliferation of fiat money is putting people who stick to hard assets at a disadvantage without them even realising it. Fiat money has to be abolished, else we are fucked.