Dollar will be there. You need a dollar to scale/calculate your Bitcoin value. Both could be the same in terms of popularity. But I do not think Bitcoin will take over the dollar anytime soon. Do we expect it? I don't know. But where there is a good side, the opposite exists as well. But we don't know the future. You could be right as well.
Bitcoin can not only be scaled or calculated in dollars, but can also be calculated in any fiat currency so that Bitcoin can continue to be popular on its own without having to depend on fiat currency. And Bitcoin may not overtake the dollar any time soon, but as more people start to feel more comfortable using Bitcoin in various sectors they will need to. Maybe dollar users themselves will prioritize Bitcoin over dollars so that dollar use can be reduced compared to Bitcoin in countries that have legalized Bitcoin, such as El Salvador.