If moderates make up 40% of the voting block, but are split 20%/20% between the two parties, despite making up the larger voting block when combined, the extrem

If moderates make up 40% of the voting block, but are split 20%/20% between the two parties, despite making up the larger voting block when combined, the extreme candidates will win each side's primary. They drop out often to prevent being a spoiler for the candidate they prefer of the remaining options. If Nader dropped out in 2000, Gore would have likely won. Nader, if anything, showed he was a bad representative by dropping out. Not sure whats so complicated about just ranking the candidates in your preferred order. Sure marginally more complicated than FPTP, but if that is too much for someone, they are feel free to just mark one candidate.