It is not yet clear exactly what SpaceX used the robot for. Journalists speculate that Spot was equipped with cameras and sensors to collect data. It could be unsafe to allow people to approach the explosion site.
Also in the pictures and videos from the cosmodrome, they noticed that the robot dog even has a booth. It is also reported that the dog was given the nickname Zeus.
Recall that the third test of the Starship prototype took place the other day. Previous attempts also ended in an explosion.