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.
I’m not the one who mixes them up… The one I replied to was presenting RCV as a panacea that would help with this party voting when in fact it entrenches the most popular party and remove most chances of other party to ever win an election.
If you want smaller parties to win, RCV isn’t the solution, you need proportional representation. You can combine both though, but that’s not what was implied in the comment that I replied to.