I asked our former state's attorney about this, because they had a couple of incidents where videos were uploaded somewhere on social media that showed someone drag racing and another that indicated vandalism was done to a vehicle. He said the reason these often don't net successful prosecution is because the state still has to prove a certain person committed an offense, and if you cannot affirmatively prove who the driver was in a video, for example, then there is some legal doubt that a competent defense attorney could use.
If a chaser uploads a video that shows an egregious traffic violation, they still need to be able to prove that the chaser that they want to prosecute was the one driving the vehicle. For example, some people do have drivers that could be silent during parts of the video, and others may on occasion have someone share a stream or upload a video on their account that someone else in the vehicle took or with whom they were riding.
That's obviously not an issue in the case surrounding the lawsuit filed yesterday, but it probably partially explains why there has been more than one high profile incident of fairly serious moving violations broadcast on storm chaser streams, YT videos, or stringer video sold to the media that, heretofore, hasn't knowingly resulted in traffic citations and/or reckless driving charges by proxy.
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