Hyperinflation is not the reason why bitcoin will not be represented in dollars on must exchanges, bitcoin is represented in dollars because it is the most useful fiat currency in the world. Even, if hyperinflation occured, that does not mean anything will change, it does not affect bitcoin but US dollar, but I am not thinking this is going to happen, many precautions would have been in place before US will make certain moves, do not be surprised after the whole thing happen but yet the US dollar still remain one of the strongest fiat currencies.
I'm pretty sure we all (or the majority) price Bitcoin in Dollars regardless of which
country we are in, I stand to be corrected on this though.
If the price of your local fiat currency decreased while dollar and bitcoin remain constant, will the price of bitcoin not increase in your local fiat. Do not let the US dollar representation on exchanges or other platforms you have seen it to confuse you, bitcoin is just priced in your local currency.