Omitting that the pedestrian was on a freeway meaningfully mis-represents the situation.
Calling them motorists would definitely be misleading by comparison. Using the simple “fatal crash” of the linked title implies the other people might in be responsible which is misleading.
Using accident but saying Tesla was at fault could open them up to liability and therefore isn’t an option.
"Pedestrian killed on freeway" instead of "pedestrian killed" doesn't take 100 words and doesn't give the impression Tesla's are mowing people down on crosswalks (although that's a feature to get clicks, not a bug).
It’s not an issue for Tesla, but it does imply bad things about the victims.
Stranded motorists who exit their vehicle, construction workers, first responders, tow truck drivers, etc are the most common victims but that’s not the association I had.
There are many reasons why a pedestrian might be on the freeway. It’s not common but I see it at least once a month and I drive extra carefully when I do, moving over if I can and slowing down.