FWIW, while I'm a strong advocate of drip watering and I avoid overhead watering of my vegetables, my grandmother raised the best veggies in the world, especially tomatoes, back on a farm in Kansas, and most of the "watering" they got was overhead - from heavy summer rain showers.   (It doesn't rain often in Kansas in August, but when it rains, it pours.)   I've never figured out why her tomatoes did so well with going a week or two without watering and then getting pounded by overhead drenching.

Of course, that was back in the days before ADM gobbled up the seed patents, and Grandma harvested her own seed crop for the next year.    Natural selection probably played a big part. Tomato varieties that couldn't handle Kansas summer weather didn't perpetuate their genes for long.

;-)