Also its kinda funny to see how much even wrong rumors can affect crypto prices.
the question is "do people really want to buy altcoins with fiat"?
adding a fiat market is not something easy like adding a new altcoin to your platform! it will bring banks and all the fiat headaches such as KYC/AML and the regulations that come with it. and for what? will users really use these fiat markets? i doubt it. take a look at the fiat volumes of altcions, the bigger ones may have some volume but it is not bigger than the same volume in same_alt/btc market and in general fiat volume doesn't exist for the rest of the altcoins.
so it is only logical that they don't want to add it.