No, nothing in ranked choice voting says that it becomes proportional representation. Ranked choice voting in the same first past the post system still stays first past the post. If you want proportional representation, it's not it.

This is a debated topic where I live. Our current PM would love ranked choice voting because it would solidify their position, kill most changes of a conservative victory and eliminate any chance of most other parties to have a meaningful impact on the government. That's why he abandoned the electoral reform because every commity and experts said that it would be way worse for democracy.