The #3 reason to use Ranked Choice Voting in presidential elections to to avoid the situation where the winner receives less than 40% of the popular vote and significantly more people voted for someone other than the winner.
With Ranked Choice Voting the winner will always receive at least 50% of the popular vote and we will avoid the situation that happened in Germany in November, 1932 when Hitler and the Nazi Party won with only 33% of the vote and in 1824 when John Quincy Adams won with only 31% of the votes. In both these elections twice as many people voted for someone other than the winner. And that’s not good in a democracy.
In our 1824 election, with four candidates running for president, no candidate won a majority of the electoral college votes and the presidential election was decided in the House of Representatives. (The only time that has happened in U.S. history.)
Although Andrew Jackson had the most popular votes and the most electoral college votes, the House of Representatives chose John Quincy Adams to be president, even though he had received only 31% of the popular vote!
In the 1912 election, again with four candidates running for President(Democrat, Republican, Teddy Roosevelt as an Independent and a Socialist Party candidate) Woodrow Wilson, the Democrat, won with only 41.8% of the popular vote.
With Ranked Choice Voting the presidential candidate would always have at least 50% of the popular vote and we would avoid electing a president who won with less than 40% of the vote. And that would be much better for our democracy.