Wasn’t she a resident of Australia? They have some pretty strict gun laws, so there’s almost no chance she’d have been able to get one.

https://en.wikipedia.org/wiki/Gun_laws_of_Australia

A person must have a firearm licence to possess or use a firearm. Licence holders must demonstrate a “genuine reason” (which does not include self-defence)

(emphasis mine)

https://en.wikipedia.org/wiki/The_Thin_White_Duke

The Thin White Duke was the persona and character adopted by the English musician David Bowie for public appearances in the mid-1970s.

[…]

The Thin White Duke became a controversial figure due to ostensibly pro-fascist statements made by Bowie in press interviews during this period. Soon after making the comments, Bowie claimed that they were “theatrical” remarks made in character and did not reflect his actual views.

LiDAR is essentially radar that uses light instead of sound

Radar doesn’t use sound. It sounds like the author doesn’t know the difference between sonar and radar.