I like the meme because of so many reasons.

Let's start with, if I am not misinformed, technically 21% of the levers could win against the rest of levers. Let's ignore the fact that those 21% levers are historically generally in favor of more genocide. And let's assume those 21% levers all go for third parties. Then they would still probably lose because they haven't voted for the same third party. So let's say those 21% are all committed to the cause and vote for the same party. In 2020, the biggest third party got 1.18%. but let's assume all previous third party voter unite and then there would be 1.72% third party voters. Now obviously those aren't part of the relevant 21% that we have been talking about but let's act as if. Now only 19.28% of all voter need to change their vote to third party. That are only 29 884 000 voters. Believe!

Finally a realistic trolley problem!

Ok now do one that shows nice long tracks. And where if you vote to destroy the country, they stop sending weapons around the world to kill everyone when there is a local civil war happening.

Now how many people outside the US borders are being murdered at a point in the future?

The trolley has breaks the conductor can push at any time, though even if they're pushed their efficiency depends on side levers next to every lever, and some levers are worth much more than others.

What's a trolley?

Track 3 promises no death at all, but if collaborative action fails, Track 2 wins

Except this is not what happened in 2016. Even if every single Jill Stien voter had gone to Clinton, she still would have needed 50% of Gary Johnson's voters to win.. It's safe to say that most people voting for the Libertarian Party candidate would have picked Track 2.