She claimed she only got the camera out as a last resort and didn't intentionally aggravate the situation. Maybe she has experienced this kind of driving on that stretch of highway before. It is a multi-lane suburban through way, not a high-speed interstate with 4 or 5 lanes, but rather entrances and exits from both lanes as well as at grade crossings. ON that kind of road the left lane is not necessarily the 'fast lane'.
As far as I know the man hasn't contested anything the woman said. Maybe we will eventually know more about exactly what happened, the video doesn't show everything.
I don't like being stuck behind slow drivers more than anyone else but if there were some reason I felt I didn't want to go faster than the limit and I had a left turn coming up I would sit in the left lane, too, and if someone tried to harass me into moving aside when I didn't think it was in my best interest I wouldn't do it. I don't know that I would pull out a video camera, but with some of these phones it is apparently a quick and easy thing to do, thus we have all of these videos like this, as well as videos of tornadoes, etc, that used to go un-witnessed but are now on Youtube for everybody to see.
I have experienced that kind of behavior where some guy pulls up behind me, drops back, accelerates again, hoping to part traffic like Moses parted the Red Sea, but if there is somebody in front of me, and somebody in front of them, and so on, we're all waiting to get around and I'm not going to pull aside just to let him take my place in line when I was there first.
It is too bad the guy wrecked a nice truck, he probably didn't really deserve that, but I am sure he has a more serious, realistic view of the possible consequences of irresponsible driving now, and it is unlikely he will continue to do that kind of thing in the future.
I'm not really a fan of people using phones while driving, but as long as they can do so reasonably, maintaining a legal speed, etc, which this woman did, I wouldn't want to see them completely disabled because they can be extremely useful sometimes. Despite many people probably using them for trivial matters I have found sometimes I need to make an important call and doing it on the road is my best option.