As far as I know this was the result of the IDF's own investigation so there's some conflict of interest
Here's the latest Wikipedia entry on the event: https://en.wikipedia.org/wiki/World_Central_Kitchen_aid_conv...
Retired Maj Gen Yoav Har-Even described how the IDF's drone operators mistook an aid worker carrying a bag for a gunman, and then targeted one of the World Central Kitchen vehicles with a missile.
The IDF then described how two people escaped that vehicle and got into a second car, which was hit by another missile from a drone.
The military confirmed that there were survivors from the second explosion, who managed to get into the third vehicle - which was then also hit by a missile.
By the end, all the aid workers were dead.
https://www.bbc.com/news/world-middle-east-68742572
Agreed that bombing the 1st vehicle of aid workers was a mistake. Then bombing the 2nd vehicle was a mistake, and the 3rd vehicle bombing was also a mistake.
In Dec 1 in 8 WCK workers were fired for Hamas ties
https://www.fdd.org/analysis/2024/12/11/aid-group-fires-doze...
Even your link calls out that one of the vehicles that split from the convoy was carrying armed gunmen.
Source?