Much like kink, as long as everyone agrees to it going in, a punishing playstyle can be what players are looking for. Just check first as a DM and players should be honest. I do appreciate that some players will take part in a game with DMs who "goes too far" and will just try to stick with it for the simple reason that otherwise, they don't get to play. I would assume the reverse can also be true. However, I think it is disingenuous for a DM to claim that they run a punishing game out of a sense of duty to tone fidelity and verisimilitude and not recognize that they may just enjoy a bit of sadism.