This isn't the issue in a filibuster; the cowardice is on the part of the senator who refuses to give up the floor. The whole point is that you talk until the b

This isn't the issue in a filibuster; the cowardice is on the part of the senator who refuses to give up the floor. The whole point is that you talk until the bill expires, and so cannot be voted on. Filibustering senators are declaring that they are unwilling to allow the issue to be voted on, not that they think their voice hasn't been heard enough.