I can give you a bunch of arguments against it. You can just go look at my history if you want a bunch of sources. Not really possible to boil it down to a short and sweet answer sadly, but in general there are much better voting methods and ones that vastly fewer problems. RCV was invented before we had a lot of data on elections and how people vote and we’ve learned a lot since then. RCV is almost always a bad choice if you’re trying to implement a new system. Either go with approval for simplicity, or STAR or 3-2-1 if you want a very good election system with all of the benefits of RCV and none of the drawbacks.
She literally can. There’s absolutely nothing preventing any member of the government from lying for any reason, no matter what, unless they’re on the stand. Campaigning is not a court room.