Kevin,
I think one of aspecst for dormant pruning besides what was discussed here is that, that’s when commercial orchards or those who have a lot of trees have time to do it. Once spring comes, they are way too busy with other things besides thinning.
I do not prune anything in the dead of winter because I do not have to. In fact, many articles suggested do not prune if there is severely cold weather (like subzero) in the forecast. I prune pome in early spring and stone fruit later. Cherry pruning is recommended in the summer.
My “when” to prune also include only on dry days… I do not prune in the rain or a forecast of prolonged wet weather esp. stone fruit. I can wait. But those with many tress or large orchard can’t.