Are we talking about the same article? The one titled “Cyclist injured in collision with van amid rush hour traffic in Cambridge”? The very same article where the sentence they complain about is “he was struck by a van”?
What information they can be missing that they can write “he was struck by a van” but not “the van struck him”?
So you think “ he was struck by a van” is safe from lawsuit while “The van struck the cyclist” would not be? Who would be suing in your opinion? the unidentified van?
> I imagine 100% of the journalism is written in a passive voice
Only if there were some way to prove or disprove your imagination. Maybe like reading any newspaper from the UK and seeing that not all of it is written in a passive voice.