You are correct. Discussion is not "attack." At this point Rand is running for president. Everything he does must be viewed through that lens: How do his actions work towards that goal? Sponsoring bills, attacking Hillary - it is all part of the Show. The Show really is for the PTB, not really so much for us.
I think it is imperative to pay attention to how the race proceeds. Are these political tactics more effective than the tactics used by his father? This is really the meta story behind Rand's actions.
It is no measure of health to be well adjusted to a profoundly sick society. - Krishnamurti.