I agree with the sentiment but the "it didn't happen right away" argument would be true of either type of action.

Thankfully, we can look back at history for assistance. "Adventurism" or "the propaganda of the deed" have very often resulted in apathy within the masses and not in any revolutionary potential building.

So, you're right. But things do take time to build movements that actually result in change. Thankfully we also have history to help direct us there as well.