At 0403 on the morning of 6 July, the time of the explosion, there were no reports of storms or lightening in the area.
Conditions were partly to mostly cloudy and calm.
https://www.wunderground.com/history/daily/KGSP/date/2022-7-6
A couple of other "internet experts" speak of the blue tint of the light and the street light getting brighter at the time of the incident. I just saw the ground come apart in a distinctive pattern that I have seen before with lightning strikes numerous times due to my line of work. I have also seen damages from lightning on a clear day that caught the house on fire. My first impression is lightning, but I will tip my hat to the vandal should that be the case.