I think plate patience is one of those things you might expect to be a bit skewed. There's such a thing as being too patient. The idea is to wait for your pitch, but if you wait and wait until you're in a 2 strike count, it becomes much more difficult to get a hit. Also, if a pitcher is having a bad day, they're going to throw more hittable pitches and it's easier to pick up on that and swing early. As a general rule, plate patience and working the count are good policies but you can't be patient for the sake of being patient, that's what the data shows IMO.