It's OK if you want to be that particular but there is no advantage to it other than psychological. I'm not quite that particular, but I do like all my broadheads placed the same just for consistency, usually with one blade up.

Think about it. It's really a dumb statement to make. If you shoot a 4 blade head with 3 fletched arrows how in the world do you align the blades with the fletching? Or 4 fletches with 3 blades?

Of more importance is using arrows with less spine deviation between them. Most carbon arrows are wrapped and where the last layer end is usually the stiffest part of the arrow Finding this seam and fletching accordingly yields better accuracy overall, but more so with blades up front.

Little things like broadhead alignment concentric with the shaft & nock fit to the string are more important than aligning blades with fletching.