I think you have missed the point. If two trucks are driving 25mph side by side on a two-lane 75mph freeway, blocking all other traffic, everyone behind them can still drive safely. They don't have to merge in and out between lanes. They don't have to be dangerous.

Too many people take the attitude that such a situation would force them to pass on the shoulder, or to cross the median and drive the wrong way on the other side of the freeway. They have no other option. They were forced to take drastic measure because there was no other choice.

Of course there's another choice. Slow down. Yes, it is frustrating. Yes, it is inconvenient. Yes, yes, it is many undesirable things. But it is an option and it is safer.