Do you throw bricks at speeding drivers from motorway bridges?
To be fair I took the OP to mean that had they been run off the road it would have been because of their actions. They had put themselves in a position where they were likely (according to the OP) to be run off the road therefore, if they had, they would have had to own the consequences of their actions. Slightly different to saying they should be intentionally run off the road as punishment for their bad riding.
A better analogy would be the driver who spins off the road after taking a corner too fast since both the driver and the cyclists in the op deserve the owning of the consequences of their actions, rather than the handing out of punishment by another for their perceived bad behaviour