I don't think that's necessarily true with Splat Zones. Aerosprays I can see quickly being phased out of Splat Zones actually in favor of longer range weapons like the N-Zapper, Dual Squelcher, the Gals, or any charger. As aggregate player skill increases, people will find counters to the common weapons, and the most common weapon coming into Splat Zones is the Aerosprays because of their dominance in Turf wars.
Aerosprays will have their uses, especially as a scout for blocking off entry points back to the zone, but given a few days things will balance out as people find better ways to approach the centre.