Most guys never read previus posts.
Your exchange balance is not influencing exchange bank accounts the moment when you trade.
It is just a number with some value. You own cash or crypto only after withdrawal.
So this would mean that it should not matter if you were in btc / ltc / eth / fiat or whatever else, all users should be reimbursed no matter what.
Quite the opposite

Opposite to what? When you deposit into an exchange you are not given fiat value into your exchange balance, but you are given only RIGHTS to trade onto their exchange with their offered value of your deposited asset.
End of day bank settlement, total bank accounts valuation and currency requirements does not have anything to do with actual currencies that are onto exchange/bank client's accounts. Just total value of all assets with total value of all client accounts.