Maybe, but if so they should have realized that nobody stands in hundred blades, and instead focused on adding a reason to use it that wasnt damage that nobody is going to stand in.
Especially the buff to the final hit of the cast. Nobody is getting hit by that. It takes 3 seconds to cast the skill.
There's a ton of things they could have done that wouldn't break the skill. Maybe hitting someone with strikes recharges your other greatsword skills a bit per hit. Maybe channeling it gives you quickness. Maybe channeling it destroys projectiles in a cone in front of you. Maybe each hit stacks a long lasting might or fury on you, or a discrete buff that refreshes if you hit with hb again in like 15/20 seconds. Maybe each hit stacks tokens that last like a minute, and when you have 8-10 the skill flips over for like 7 secs and its just the last strike that does like 5-7k. Idk. They have options if they sit down and think about how it should be used.
If i can sit here and come up with like 5 ideas in the spam of 30 seconds-
Idk I'm tired man