I'm not ascribing a motive. They might believe whatever to justify their inaction. I'm just outlining the actual effect of their choice, which is quite literally to allow for others to choose.

This is a subtle moving of the goalposts. The original point from misnome was that people who didn't vote "voted for whoever won". Your last point was that non-voters inherently "stand by their choice". Neither of those is "the actual effect of their choice". They’re attempts to interpret the intention of non-voters.