And who’s in control of that system, Edward? Republicans and Democrats, of course. And neither of them have any incentive to switch to runoff voting or some other new voting system. The only way they’ll ever change that system is if third-party voters start consistently “stealing” just enough votes in each election to frustrate the 2 major parties and encourage them to consider making a change. To get to that point, though, third-party voters have to keep voting third party.
IOW, some of them are trying to accomplish the exact thing that you say they should be trying to accomplish, and yet you’re criticizing them for it.