That's not the case necessarily. The magnitude of the ppo is linked to the share price. You will rarely find a big board stock with a ppo <-10 unless it is highly distressed. But you will see many penny stocks with a ppo <-10
In other words, the desired magnitude of the ppo line in a pincher setup is not a determinant of risk willingness, but of the price range you are willing to play pincers.