Steelmanning is useful as a technique because often the intuition of somebody’s argument is true even if the precise argument they are using is not. If the other person is a rationalist, then you can point out the argument’s flaws and expect them to update the argument to more precisely explore their intuition. If not, you likely have to do some of the heavily lifting for them by steelmanning their argument and seeing where its underlying intuition might be correct.
This post seems only focused on the rationalist case.
Steelmanning is useful as a technique because often the intuition of somebody’s argument is true even if the precise argument they are using is not. If the other person is a rationalist, then you can point out the argument’s flaws and expect them to update the argument to more precisely explore their intuition. If not, you likely have to do some of the heavily lifting for them by steelmanning their argument and seeing where its underlying intuition might be correct.
This post seems only focused on the rationalist case.