It’s a significant coincidence that the bikers were only 500 feet from where they were staying. They probably were all over the road while they were gathering in their formation. If just one of them was in the wrong lane, the truck would lock up to stop and the empty trailer would fishtail.
10 to 1, it was the fault of one or more of the bikers.
Over the 200,000 miles plus that I’ve driven in the past decade or so, I have noticed that the most disrespectful, aggressive, and road raging vehicles on the streets are none other than motorcycles and trucks.
I stay away from them, but even when you drive in the ‘slow’ lane these jerks will tailgate you.
People are just downright stupid out there. Surprised this type of accident doesn’t happen more often to be honest - as in daily.