Surface area has a pretty significant impact on the vape, the same atomizer with the same juice running at the same temperature WILL have a different taste, density of vapor, etc, with lower or higher gauge wire.
Not all sub-ohm fans are ignorant of the advantages of regulated mods (I'd venture say most aren't). But we still prefer using thicker wire for the "quality" of the vape, be it flavor or clouds or a combination of both, and build deck constraints, coil mass issues (ramp up and cool down), etc, mandate that if we want to keep enjoying that type of Kanthal vape, we need to build low resistance.
But I don't fault people who like vaping high ohm thin wire builds. Why? Because they LIKE it. And that's reason enough for me.