ToME: the Tales of Maj'Eyal

Is there any reason to explain why Fearless Cleave does not generate death momentum?

"Every time you move you gain a charge..."

Obviously fearless cleave is based on moving.

The way the code works.
Any talent that causes you to move generally won't trigger anything that would trigger if you used a Move action.

Would be funny if Rush gave you full momentum stacks everytime