The Supreme Court cannot rule the Electoral College unconstitutional. If they throw out the Electoral College, which is explicitly written into the Constitution, then why not throw out the part about Supreme Court justices being appointed for life and just elect new ones?
That said, the Electoral College renders my vote useless as I live in the People’s Republic of California and am just one lone red voice crying out in a wilderness of blue. It does not matter how I vote; my state’s electoral votes all go the Demonrats anyway. Same thing for those who live in solid red states. Only if you live in a handful of swing states does your vote actually count for something. So if someone introduced a Constitutional Amendment and abolished the Electoral College the legal way I can’t say I would be crying my heart out.
I live in Texas and the news recently reported that in 2018, 86,000 people from California moved here. Not that I’m against that unless their desire is to now remake Texas into a California clone.