Kelroy has some good points, just not for this conversation. Otherwise he's correct.
No the fish don't care what rod/reel you use. It doing its job in the most efficient way is what matters. If you're cruising points, flats, treetops, etc looking for fish on your graph getting the bait down quickly is what's important. A spinning outfit will do that better than a baitcasting outfit. Sometimes the "herd" does things a certain way because it's been proven the best way to approach that technique. Now with casting I'd say baitcasting gear since that's what you prefer. Vertically though, for reaching fish quickly, you won't beat the free fall of spinning gear.
Btw, dropshotting and crappie fishing are about the only time I use spinning tackle.