Well, I voted that I don’t try to avoid pointless combats, so that shouldn’t come as a surprise.
I did say if there’s no meaningful for failure, there’s no need for a roll. The rogue can just succeed at killing the robin in that case.
It still doesn’t seem to me like your hypothetical demonstrates an instance of a pointless combat. Either there is no consequence for failure, in which case there is no combat because the action can be resolved without needing to call for any rolls, as per the how to play rules; or, there is a consequence for failure, in which case the combat is not pointless. The point is to see if that consequence occurs.