Dear sir,...
You start the article with, "A motorcyclist was injured after crashing into a vehicle,"
...
This leads the reader to believe the motorcyclist was at fault, when that is possibly not the case.
In the writer's defense, the opening line is simply a known fact. The motorcyclist was injured as a result of crashing into a vehicle. There is nothing false about that statement and it is not "spun" in any way. The condition of the rider, the bike and the "vehicle" make it quite undeniable.
Based on the wording of the article, it appears that the additional fact that another vehicle may have hit the motorcycle first is not as undeniably true. There were only reports received that it "may" have happened. If there were very confident eyewitness reports of it *really* happening and/or there was clear evidence of another vehicle involved, then I would expect the wording to be different.
I think this is more a result of readers' bias about the phrase "crashed into". The phrase itself places no blame, but people assume that the crasher is at fault for crashing into the crashee (I don't think that's really a word). How can you more neutrally say that a motorcycle crashed into a car?
Additionally, based on the wording of the article, I can only assume that the "vehicle" was not determined to be in the right of way of the motorcycle (it sounds like another car *may* have hit the motorcycle and caused the motorcyclist to involuntarily change its path), so there would be no reason to report in a way that blames the vehicle that was crashed into.
I took an awesome logic class in college that, in addition to other things, taught students to more critically interpret advertising and news media. The world would be a better place if everyone received this education.
With all that said, I do believe that writers should be more aware of the bias that readers place on technically neutral words/phrases. In this case, it probably would have been best to mention the reports of the additional vehicle involvement up front, but I don't see anything wrong with the wording itself in those two separate sentences that should be together to tell the whole story at once.