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.
In today's world the number of people who use dollars is very high but the popularity of Bitcoin is also very high now if you compare it with the past few years. So what is the reason behind the popularity of Bitcoin or who is using Bitcoin? Dollar users are Bitcoin users. Now maybe they are giving more importance to dollar than bitcoin but after few years it will be seen that bitcoin has taken the place of dollar. We always hear positive news about Bitcoin. Starting from the transaction of buying and selling houses through Bitcoin, many large transactions are currently being done by people through Bitcoin. Those who are doing big transactions with Bitcoin could do their transactions with Euros or Dollars if they want but they are relying on Bitcoins instead of doing them, in this case it is definitely safer for those people to use Dollars or Bitcoins from Europe as a means of transaction.
People now look for security of money as well as people now prefer to use digital money. It is only a matter of time that the use of the dollar will decrease and the use of Bitcoin will increase at a later date. Maybe we won't see it, but our next generation will see the highest use of bitcoins compared to the dollar.