"This is my playstyle" is a poor argument for being bad.

[Adire]

Because is better to waste time and damage in the most useless aoe damage spell in the game than getting a 3k critical Raiton or a x2 1,5k Katon

Uhhh....Doton with Kassatsu actually adds up to be more damage than crit Raiton if multiple mobs are present, and more than a Katon. Do the simple potency math. Parse it too if you don't believe me.

Doton has 30 potency per tick, with 8 ticks per use. It adds up to be 240 potency per mob. Raiton is 360 potency, superior against 1 mob, arguably 2 with burst damage being a thing, but 3 is where Doton starts to become superior, especially with Kassatsu. Doton just blows Katon out in overall damage vs its 180 potency. The only time you'd want to use Katon over Doton is when you need burst AoE or when the tank isn't keeping mobs inside Doton. Even clipping the remaining one tick on Doton with another Doton is superior aoe damage to using Katon.

And as RiceisNice said, sometimes there's nothing left to hit with Armor Crush. I start using the Armor Crush combo exclusively when things are almost dead to ensure Huton stays up without needing to use the ninjitsu, but sometimes tanks are slow to pull the next group, so that leaves one option: Huton. If the pull is so slow that you can fit a Huton Ninjitsu in without clipping it with the next fight, it's actually better to do it so you don't have to Armor Crush sooner.

But yeah, if you're going to be condescending, at least know what you're talking about. You're calling people bad but are failing to understand how these skills work....it doesn't look good.