If they released an official stablecoin and it is much more convenient to use than mainstream crypto like Bitcoin, it's pretty obvious that people would use the stablecoin. Especially when we are talking about fees and transaction speed. Stablecoin can have those advantage.
Of course, people will use it and make it like the traditional stable coins where they will gonna convert their BTC and other altcoins to it. so it will remain at the same price when it was in its ATH. It's helpful to have a stable coin with us and what more if it comes from a country where you could convert it easily to their local currency. That would be great for us and will be convenient for the others who don't have any technical knowledge on using exchanges.