Honestly it is hard to talk about adoption and acceptance because all we know that even bitcoin had a acceptance and adoption problem and issue from the start. And I think as of now bitcoin experience that problem. But the advantage of stable is as a new project it is very flexible like tether that can be used even in pornhub. But I hope it will happen because all of us can have benefits.
Maybe at least stablecoin have something that people afraid in bitcoin, volatile. With stable coins, people don't need to be afraid if be seller or buyer so they not afraid to lose when price down. Because with stablecoin, at least price will be stable and it can really be used as payment.