The vast majority of seeds that germinate(sprout a taproot) will grow regardless of seed orientation. The roots will always grow down. But a few may die if it takes too long to find light or the shell getting stuck can cause problems. It's not a problem for most crops as seeds are cheap. But at $5-10 per seed, I can see being anal and giving the seed extra attention as being worthwhile to some.
That reminds me. Be careful about adding water to a seed in soil. The water can move the seed around or even wash the seed deep into the dirt.