I’ve heard there’s (alledgly) pressure from the progressive wing to avoid this because they want to win the Popular Vote regardless of outcome. Losing both makes them look weak. Or worse(to them), if they won the Electoral College and lost the Popular Vote. Some feel it would massively decrease support for the popular vote as a lot of people may only be supporting it when it backs there team(I will note support for reform is far higher among democrats, make of that what you will)