He did sell out the domestic cups from time to time though. Palace away we rested so many key players if I recall correctly which says a lot about where the prioritise were at certain times during his tenure.
But we still dominated that game and missed a pen IIRC. We had a good squad that needed games, and you simply cannot just play the same 11 twice a week for 8 months. You have to prioritise, but I don't think we ever went into games not trying to win them.
Look at Liverpool, just played U23 teams against Villa and Everton in cup games.