The lapped cars late in a race, you can consider like a spoiler in NFL playoffs. In week 16 there are teams that will not make the playoffs, like car 32. But they can play by the rules and knock out competition.
Again, if it is within the rules of professional racing for a first place driver to prevent the 2nd place driver behind them from passing, I don't see why it should be against the rules for the driver in last place to prevent someone from lapping them.
If it does not violate safety rules, then position should not matter.
Again, if it is within the rules of professional racing for a first place driver to prevent the 2nd place driver behind them from passing, I don't see why it should be against the rules for the driver in last place to prevent someone from lapping them.
If it does not violate safety rules, then position should not matter.