What does RP exactly do that you can't do in Figma? With the right plugins and component libraries, I dare say that Figma is definitely more powerful than Axure's offering.

I use Axure to prototype enterprise apps, i.e. lots of forms and data grids.

Last time I checked, Figma didn’t support interactive form elements or prototyping conditional branching based on what you type in a form field.

Being able to prototype business logic without having to get developers having to develop something, saves a lot time at early stages when you explore new features with business users and you can also iterate faster and it’s better for user testing as well, as it’s more than just clickable hotmapped images.

I know you could achieve the same with Framer, since you get access to the code, so that’s useful for designers who can code.

Axure is great for designers or product folks who can’t code.

Is the above possible in Figma now?

I tried to switch to Adobe XD, but sooner or later you can't do some sort of thing that is simple in Axure and you are stuck. Simple example. You have a settings page like this:

Setting 1 name [toggle]

Setting 2 name [toggle]

Setting 3 name [toggle]

You want to turn any toggle on and panel with subsettings should appear underneath clicked setting name, shifting down all other settings below. In Axure it is just a checkmark "push widgets below".

Are there powerful prototyping plugins for Figma? I'd love it if the answer is yes.

Axure is horrible for wireframing and a non-starter for visual design, but it has the most powerful prototyping features I've seen by a long shot. Framer is straight up writing React code, so I don't count that as an option for the vast majority of designers.

Why do you think Axure is horrible for wireframing?

I guess that isn't fair. It doesn't have all the layout assistance and plugins that Sketch and Figma have. It is perfectly fine as a wireframing tool.